🦎 Reptile Nutrition Guide
Herbivorous Reptile
Vegetable & Fruit Feeding Chart
Research-backed feeding charts for iguanas, bearded dragons, blue tongue skinks, uromastyx, tortoises, turtles, and more with safe foods, foods to avoid, and pro tips from herpetology experts.
7 Species Covered
50+ Foods Rated
8 Key Feeding Tips
⚠️ Toxic Foods Listed
Photo: Island Microgreens
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Staple = Daily/Often
These foods form the core of the diet. Rich in calcium with a good Ca:P ratio.
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Weekly Rotation
Nutritious but with caveats, rotate in for variety, not as daily staples.
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Fruit = Treat Only
All fruits are high in sugar. Limit to 5-10% of diet max for most species.
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Avoid / Never Feed
Some foods are toxic or block calcium absorption. Know these by heart.
Chart Key
Daily / Staple core diet, feed freely
Weekly good but rotate, some caveats
Occasional limited amounts, 1-2x/month
Fruit / Treat 5-10% of diet max
Avoid / Toxic never or extremely rarely
🌱 What Does "Micro/Greens" Mean in This Chart?
Throughout this feeding chart, many foods are labeled Collard Micro/Greens, Mustard Micro/Greens, Arugula Micro/Greens, and so on. This notation means you can feed that food as either a full-grown vegetable or as microgreens - the young seedlings harvested at 7-14 days - and both are safe and beneficial for your reptile.
USDA-affiliated research found that microgreens can contain up to 5x the concentration of nutrients by weight compared to their mature counterparts. For reptile owners, this means a smaller serving of home-grown collard microgreens can deliver comparable, or greater, calcium and vitamin density than a full bunch of store-bought collard greens. Microgreens are also pesticide-free when grown at home, easy to portion, and freshness is guaranteed.
Collard Micro/GreensYoung collard seedlings, slightly milder flavor, same high calcium content. Ideal for all herbivorous species.
Mustard Micro/GreensPeppery seedlings, excellent calcium source. Offer in rotation; mild goitrogens apply same as adult leaves.
Arugula Micro/GreensLow in oxalates, great Ca:P ratio. One of the most reptile-friendly microgreens. Works for all 7 species.
Dandelion Micro/GreensCa:P ratio of ~2.8:1 - perfect. Young dandelion microgreens are softer and easier for smaller lizards to eat.
Pea Shoot Micro/GreensExcellent for tegus, blue tongue skinks, and tortoises. Good fiber and gentle plant protein.
Sunflower Micro/GreensHigh in amino acids and vitamin E. Loved by iguanas and bearded dragons. Offer as part of variety mix.
Radish Micro/GreensAdds spicy variety, use in moderation as a rotation food alongside calmer greens.
Broccoli Micro/GreensHigh in sulforaphane, offer occasionally only, same goitrogen caution as adult broccoli.
Grow pesticide-free reptile microgreens at home: Island Microgreens
🦎 Select Your Reptile
Click a species below to open their personalized vegetable & fruit feeding chart.
🦎 Green Iguana (Iguana iguana)
Strict herbivore - Hindgut fermenter - Requires high-fiber, low-protein diet
80-90% Dark Leafy Greens
10-20% Other Vegetables
<10% Fruit (treat only)
| Food | Frequency | Notes |
|---|---|---|
| Collard Micro/Greens micro ok | Daily | Top staple: excellent Ca:P ratio, high fiber, low oxalates |
| Mustard Micro/Greens micro ok | Daily | Great calcium source; limit quantity (mild goitrogenic) |
| Turnip Micro/Greens micro ok | Daily | Excellent Ca:P, rotate with other staples |
| Dandelion Greens & Flowers micro ok | Daily | High calcium, Ca:P ~2.8:1; a perfect iguana superfood - pesticide-free only |
| Escarole / Endive micro ok | Daily | Low oxalates, good nutrients, widely recommended |
| Arugula Micro/Greens (Rocket) micro ok | Daily | Excellent rotation green, peppery, nutritious |
| Watercress Micro/Greens micro ok | Daily | Ca:P ~2:1, moderate oxalates, great variety green |
| Hibiscus (leaves & flowers) | Daily | Natural food for iguanas; provides enrichment and variety |
| Nasturtium (leaves & flowers) | Daily | Excellent edible flower; peppery, nutritious, pesticide-free |
| Butternut Squash | Weekly | Good nutrition; can be raw or lightly steamed |
| Acorn / Spaghetti Squash | Weekly | Great staple vegetable alongside greens |
| Green Beans | Weekly | Good fiber; chop small |
| Zucchini | Weekly | Hydrating and mild; good for variety |
| Bell Pepper (any color) | Weekly | Rich in vitamin C; red/orange/yellow more nutritious than green |
| Parsnips | Weekly | Good vitamin content, offered shredded |
| Okra | Weekly | Good fiber and nutrients |
| Peas (snow peas, snap peas) | Weekly | Good protein, moderate phosphorus, rotate |
| Prickly Pear Cactus (pads) | Weekly | Excellent Ca:P, hydrating, natural iguana food |
| Sweet Potato | Occasional | High vitamin A but high in phosphorus, limit frequency |
| Carrots (shredded) | Occasional | Vitamin A rich; fat-soluble, can build up if overfed |
| Broccoli Micro/Greens micro ok | Occasional | Goitrogenic, interferes with thyroid iodine; OK rarely |
| Kale Micro/Greens micro ok | Occasional | Goitrogenic + moderate oxalates; far better greens available |
| Swiss Chard / Beet Greens | Occasional | High oxalates, bind calcium, prevent absorption; limit strictly |
| Papaya | Treat | Excellent fruit choice, good enzyme content; 1-2x/week max |
| Mango | Treat | High vitamin A; offer occasionally |
| Berries (strawberries, blueberries, raspberries) | Treat | Antioxidant-rich; moderate oxalates, small amounts |
| Melon (cantaloupe, honeydew) | Treat | Hydrating treat; limit due to sugar |
| Figs | Treat | High oxalates, very limited quantities only |
| Apple (peeled, no seeds) | Treat | Remove seeds (toxic), peel, occasional small piece |
| Avocado | NEVER | Toxic, contains persin; can be fatal |
| Rhubarb | NEVER | Extremely high oxalic acid, causes kidney crystal deposits |
| Onion / Garlic | NEVER | Toxic to most reptiles |
| Citrus fruits | Avoid | Too acidic, disrupts gut flora, causes GI distress |
| Iceberg Lettuce | Avoid | Nutritionally empty, mostly water, no benefit |
| Spinach | Avoid | Very high oxalates, blocks calcium absorption, risks MBD and anemia |
| Animal Protein (meat, insects, eggs) | NEVER | Iguanas cannot process protein well, causes kidney failure, gout |
🚨 Critical Never-Feed List for Iguanas
- Avocado - all parts contain persin, toxic and potentially fatal
- Rhubarb - causes lethal calcium oxalate crystal deposits in kidneys
- Animal protein (meat, insects, eggs) - causes kidney disease and gout
- Onion & garlic - toxic to reptiles
- Spinach daily - chronically blocks calcium leading to metabolic bone disease (MBD)
- Dog/cat food - far too high in protein and fat
💡 Pro Tips for Iguanas
- Aim for minimum 5 different greens per "salad" - variety ensures balanced nutrition
- Chop or shred everything finely; iguanas do not chew thoroughly
- Dust food with calcium powder (without D3 if under proper UVB; with D3 if not)
- Rotate goitrogenic greens (broccoli, kale, mustard) to prevent thyroid issues
- Greens should make up the overwhelming bulk - fruit is a small garnish, not a course
🐉 Bearded Dragon (Pogona vitticeps)
Omnivore - requires protein + plants - Juveniles protein-heavy; adults more plant-based
Juveniles: 70% insects / 30% plants
Adults: 70% plants / 30% insects
<10% Fruit of plant portion
| Food | Frequency | Notes |
|---|---|---|
| Collard Micro/Greens micro ok | Daily | Top staple - excellent Ca:P ratio, low oxalates |
| Turnip Micro/Greens micro ok | Daily | Excellent calcium; one of the best beardie greens |
| Dandelion Greens & Flowers micro ok | Daily | Ca:P ~2.8:1 - highly recommended staple; use pesticide-free only |
| Arugula Micro/Greens (Rocket) micro ok | Daily | Low oxalates, great variety, naturally appealing |
| Endive / Escarole micro ok | Daily | Low oxalates, excellent rotation staple |
| Mustard Micro/Greens micro ok | Daily | Calcium-rich; mild goitrogenic - rotate, do not feed daily only |
| Butternut Squash | Weekly | Good vitamin A and fiber - shred or cube small |
| Acorn Squash | Weekly | Excellent nutrition profile |
| Bell Peppers (all colors) | Weekly | High vitamin C; red/yellow more nutritious |
| Green Beans | Weekly | Good fiber; chop smaller than eye-width apart |
| Prickly Pear Cactus (pads) | Weekly | Outstanding Ca:P - highly recommended |
| Snap Peas / Snow Peas | Weekly | Good fiber, moderate phosphorus |
| Zucchini | Weekly | Hydrating and mild - pairs well with greens |
| Sweet Potato (raw, grated) | Occasional | High vitamin A (fat-soluble, accumulates) - 1-2x/week max; never cooked |
| Carrots (shredded) | Occasional | Vitamin A-rich - can cause toxicity if overfed |
| Bok Choy | Occasional | Good Ca:P but goitrogenic - limit |
| Broccoli Micro/Greens micro ok | Occasional | Goitrogenic; small floret 1-2x/month |
| Kale Micro/Greens micro ok | Occasional | High oxalates + goitrogenic - many experts say avoid entirely; better options exist |
| Strawberries | Treat | Great antioxidants; moderate goitrogens - 1-2x/week |
| Blueberries | Treat | Antioxidant-rich; slightly mash for older beardies |
| Raspberries / Blackberries | Treat | Good nutrient profile; feed 1-2x/week |
| Mango | Treat | High vitamin A and fiber - popular with beardies |
| Papaya | Treat | Excellent digestive enzymes, moderate Ca:P |
| Apple (peeled, no seeds) | Treat | Seeds contain cyanide - always peel and deseed |
| Melon (cantaloupe, watermelon) | Treat | Hydrating; very sweet - limit to once weekly |
| Peach (no pit) | Treat | Pits are toxic; flesh occasionally is fine |
| Avocado | NEVER | Toxic - contains persin |
| Rhubarb | NEVER | Lethal - oxalic acid causes kidney crystal deposits |
| Onion / Garlic / Leeks / Chives | NEVER | Cause blood abnormalities and GI damage |
| Citrus fruits | Avoid | Too acidic - causes digestive irritation |
| Bananas | Avoid | Extremely high phosphorus - blocks calcium absorption; risks MBD |
| Spinach | Avoid | Very high oxalates - blocks calcium, contributes to MBD |
| Iceberg Lettuce | Avoid | No nutrition - causes diarrhea; use better greens |
| Fireflies / Lightning Bugs | NEVER | Single firefly can be lethal to a bearded dragon |
🚨 Critical Never-Feed List for Bearded Dragons
- Fireflies / lightning bugs - even one can kill a bearded dragon
- Avocado - persin toxicity
- Rhubarb - lethal oxalic acid concentration
- Onion, garlic, leeks, chives - blood toxicity
- Wild-caught insects - may carry pesticides or parasites
- Spinach as a staple - chronic MBD risk
💡 Pro Tips for Bearded Dragons
- Rule of thumb: no food piece wider than the space between your beardie's eyes
- Adults need vegetables available daily; insects only 3-4x/week to prevent obesity
- Always gut-load insects 24-48 hours before feeding for maximum nutrition
- Dust insect feeders with calcium powder at every feeding for juveniles; 3-4x/week for adults
- Transition adult beardies away from daily insects to prevent fatty liver disease
🦎 Blue Tongue Skink (Tiliqua spp.)
Omnivore - Adults: 50% protein, 40% vegetables, 10% fruit - Requires high variety
Adults: 50% protein / 40% veg / 10% fruit
Babies (<1yr): 70-80% protein
10% Fruit max
| Food | Frequency | Notes |
|---|---|---|
| Collard Micro/Greens micro ok | Daily | Best staple green - high calcium, good Ca:P ratio |
| Dandelion Micro/Greens micro ok | Daily | Top calcium source; use pesticide-free only |
| Mustard Micro/Greens micro ok | Daily | Calcium-rich; mild goitrogenic - rotate with other staples |
| Arugula Micro/Greens micro ok | Daily | Low oxalates, excellent nutrient profile |
| Endive / Escarole micro ok | Daily | Excellent low-oxalate staple green |
| Green Beans | Weekly | Good fiber; chop finely |
| Butternut Squash | Weekly | Good vitamin A, hydrating |
| Bell Peppers | Weekly | Vitamin C-rich; all colors safe |
| Zucchini | Weekly | Hydrating mild vegetable - good in rotation |
| Peas | Weekly | Good protein boost; moderate phosphorus |
| Carrots (shredded) | Weekly | Good vitamin A; shred finely; do not overfeed |
| Sweet Potato (raw, grated) | Occasional | Vitamin A-rich; serve raw and grated |
| Kale Micro/Greens micro ok | Occasional | Good Ca:P but high oxalates and goitrogenic; rotate |
| Broccoli Micro/Greens micro ok | Occasional | Goitrogenic; small amount rarely |
| Blueberries | Treat | Great antioxidants; popular with BTS |
| Mango | Treat | High vitamin A; slice small pieces |
| Papaya | Treat | Good enzymes and nutrients; slice small |
| Peach / Pear / Nectarine (no pit) | Treat | Remove pits always; occasional small piece |
| Raspberries / Blackberries | Treat | Small amounts; moderate oxalates |
| Watermelon (no seeds) | Treat | Remove seeds; hydrating summer treat |
| Banana | Very Limited | Very poor Ca:P ratio, high sugar - almost no nutritional value for BTS |
| Onion / Eggplant | NEVER | Toxic to blue tongue skinks |
| Avocado | NEVER | Persin toxicity |
| Rhubarb | NEVER | Lethal oxalic acid |
| Citrus fruits | Avoid | Too acidic for digestive system |
| Spinach | Avoid | High oxalates - blocks calcium; far better greens available |
| Azalea / Daffodil / Tulip / Lily of the Valley | NEVER | Highly toxic ornamental plants |
💡 Pro Tips for Blue Tongue Skinks
- Quality dog food (wet, no artificial colors/flavors) can be used as the protein component for adults
- Use cat food for juveniles (higher protein) and switch to dog food at ~1 year
- Variety is critical - if your BTS refuses veggies, try mashing and mixing with protein
- Maintain 2:1 Ca:P ratio across the full meal; this means leafy greens must always be present
- Feed babies daily; adults only 1-2x/week to prevent obesity
🦕 Uromastyx (Uromastyx spp.)
Strict herbivore - Desert species - No animal protein - Loves lentils & seeds in moderation
60-80% Dark Leafy Greens
15-25% Vegetables
<5% Fruit (10 days or less)
| Food | Frequency | Notes |
|---|---|---|
| Dandelion Greens & Flowers micro ok | Daily | Perfect Ca:P of 2.8:1 - top uromastyx superfood; pesticide-free only |
| Collard Micro/Greens micro ok | Daily | Excellent calcium source; a reliable daily staple |
| Mustard Micro/Greens micro ok | Daily | High calcium; rotate with other staples |
| Endive / Escarole / Chicory micro ok | Daily | Excellent low-oxalate staples; chicory especially loved |
| Turnip Micro/Greens micro ok | Daily | Top-tier Ca:P ratio; include regularly |
| Watercress Micro/Greens micro ok | Daily | Good Ca:P 2:1, moderate oxalates - good rotation green |
| Hibiscus (leaves & flowers) | Daily | Highly nutritious edible flower; natural uromastyx food |
| Cactus pads (Opuntia) | Weekly | Outstanding hydration and Ca:P; excellent desert-appropriate food |
| Butternut / Acorn Squash | Weekly | Good vitamin A source; hydrating |
| Bell Peppers | Weekly | Vitamin C boost; all colors safe |
| Peas (cooked or raw) | Weekly | Moderate protein from plant source; good rotation food |
| Lentils (dry or sprouted) | Weekly 1-2x | Uros love lentils! High in protein - offer sparingly; grind for adults |
| Bee Pollen | Weekly 1x | Natural appetite stimulant, antioxidant-rich - high protein, so limit strictly |
| Sesame Seeds | Occasional | Sprinkle on salad - calcium-rich; high in fat so small amounts |
| Chamomile / Lavender / Rose Petals / Marigold | Occasional | Edible flowers add variety and enrichment; pesticide-free |
| Dill / Parsley / Basil / Mint | Occasional | Fresh herbs add variety; parsley high in oxalates - limit |
| Figs (fresh) | Rare Treat | High oxalates - once every 10+ days |
| Berries (blueberries, raspberries) | Rare Treat | Small amount once every 7-10 days |
| Mango / Papaya | Rare Treat | Small pieces; ensure no high-sugar overload |
| Spinach | Avoid | Very high oxalates - blocks calcium; avoid entirely |
| Tomatoes | Avoid | Acidic and high in phosphorus; leaves are toxic |
| Eggplant | NEVER | Toxic to uromastyx |
| Avocado | NEVER | Persin toxicity |
| Bananas / Corn | Avoid | Extremely high phosphorus (corn Ca:P = 1:13!) - causes calcium absorption failure |
| Watermelon | Avoid | Too high in water and sugar for a desert species; causes diarrhea |
| Citrus fruits | Avoid | Too acidic - causes diarrhea |
| Animal protein (insects, meat) | NEVER | Causes rapid kidney and liver damage in this strict herbivore - will shorten lifespan significantly |
| Kale / Broccoli / Brussels Sprouts | Very Limited | Worst goitrogenic offenders in brassica family - limit strictly |
🚨 Critical Uromastyx Warning
- Animal protein (any form) - uromastyx have no ability to safely process it. Even occasional insects cause irreversible kidney/liver damage
- Eggplant - directly toxic
- Avocado - persin toxicity
- Corn - Ca:P ratio of 1:13 means every bite actively destroys calcium balance
- High-water content vegetables - can cause GI issues in this desert-evolved species
💡 Pro Tips for Uromastyx
- Uros get most of their water from food - do not over-hydrate with high-water vegetables
- Fresh edible flowers (dandelion, hibiscus) are often the most eagerly eaten foods
- Sprout your own lentils at home - soak overnight, drain, rinse daily for 3-4 days
- Bee pollen is a powerful appetite stimulant - great for picky eaters; use once a week max
- If your uro ignores veggies, only offer lentils/seeds AFTER they eat some greens
🐢 Tortoise - Sulcata & Russian (Centrochelys sulcata / Testudo horsfieldii)
Strict herbivore - High-fiber, low-protein, low-sugar diet - Grasses are primary food
Sulcata: 70% Grasses & Hay / 20% Greens / 10% Veg
Russian: 75% Weeds & Greens / 20% Veg
<5% Fruit (treat)
| Food | Frequency | Notes |
|---|---|---|
| Timothy Hay / Orchard Grass / Bermuda Grass | Daily | Should be available 24/7 for sulcatas - the foundation of their diet |
| Dandelion Greens & Flowers micro ok | Daily | Perfect for both sulcata and Russian tortoises; Ca:P 2.8:1 |
| Clover (red & white) | Daily | Excellent tortoise grazing plant; wild or grown pesticide-free |
| Collard Micro/Greens micro ok | Daily | Top dark leafy green for all tortoise species |
| Mustard / Turnip Greens | Daily | Excellent calcium sources; rotate with collards |
| Endive / Escarole / Chicory micro ok | Daily | Low oxalates, great for Russian tortoises especially |
| Plantain weed (Plantago spp.) | Daily | Wild edible weed - excellent fiber and nutrients for tortoises |
| Hibiscus (leaves & flowers) | Daily | Tortoises love hibiscus; nutritious and enriching |
| Pumpkin | Weekly | Nutritious; good fiber; hydrating treat for sulcatas |
| Winter / Butternut Squash | Weekly | Vitamins A and C; good vegetable rotation |
| Sweet Potato (small piece, raw) | Weekly | Vitamin-rich; limit amount due to high sugar content |
| Carrots (grated) | Weekly | Vitamin A; grated to prevent choking; small amounts |
| Rose of Sharon / Rose Petals / Chamomile | Weekly | Excellent edible flowers for all tortoise species; add enrichment |
| Kale Micro/Greens micro ok | Occasional | Goitrogenic; use in rotation, not as daily green |
| Romaine Lettuce micro ok | Occasional | Low nutrition but safe; use sparingly only with better greens |
| Strawberries | Rare Treat | Sulcatas enjoy them; small piece only |
| Watermelon rind | Rare Treat | Sulcatas especially like the rind - hydrating treat |
| Banana (with skin) | Rare Treat | Very high sugar - very rarely |
| Apple / Pear / Peach (no pit/seeds) | Rare Treat | Small pieces; remove all seeds; once or twice a month |
| Mango / Papaya / Fig | Rare Treat | Russian tortoises especially enjoy; limited portions |
| Spinach / Beet Greens | Avoid | High oxalates - blocks calcium; not appropriate for calcium-sensitive tortoises |
| Avocado | NEVER | Persin toxicity - all parts toxic |
| Rhubarb | NEVER | Even the stalks are toxic to tortoises - causes fatal oxalate deposits |
| Cabbage / Bok Choy (excess) | Avoid | Goitrogenic; liver and kidney risks with excess |
| Buttercup flowers | Avoid | Mildly toxic; fatalities reported with large amounts |
| Animal protein (meat, dog/cat food) | NEVER | Sulcata tortoises are strict herbivores - protein causes shell deformities, kidney failure |
| Mushrooms | Avoid | Some species highly toxic; not appropriate for tortoises |
| Cucumber / High-water vegetables (regular) | Limit | Too much water disrupts desert tortoise digestive system |
💡 Pro Tips for Tortoises
- Grass and hay are not optional for sulcatas - they are the core food, not a supplement
- Russian tortoises do better with a wider variety of weeds and broadleaf plants
- Cut/chop vegetables before serving to prevent tortoises from eating only their favorites
- Always provide a cuttlebone - it gives a constant source of accessible calcium and helps beak wear
- Sulcata adults: feed 3x/week minimum; hatchlings: daily
- Never feed tortoises in water (unlike aquatic turtles); they eat on dry land
🐢 Aquatic Turtle / Box Turtle (Red-Eared Slider, Box Turtle, Painted Turtle)
Omnivore - Plant matter increases with age - Adult sliders: 50-60% plant material
Adult Red-Ear Slider: 50-60% Plant Material
Box Turtle: ~50% Plant / 50% Protein
Fruits: occasional treat only
| Food | Frequency | Notes |
|---|---|---|
| Romaine Lettuce micro ok | Daily | Aquatic turtles love floating romaine - easy, nutritious, hydrating |
| Collard Micro/Greens micro ok | Daily | Excellent calcium; clip to side of tank or float pieces |
| Dandelion Micro/Greens micro ok | Daily | High calcium; great for both sliders and box turtles |
| Mustard Micro/Greens micro ok | Daily | Calcium-rich staple for aquatic species |
| Kale Micro/Greens micro ok | Weekly | High calcium for shell health; limit due to oxalates and goitrogens |
| Aquatic Plants (duckweed, water hyacinth) | Weekly | Natural food for aquatic turtles; excellent enrichment |
| Squash (butternut, winter) | Weekly | Good vitamins; chop into small pieces |
| Carrots (shredded) | Weekly | Vitamin A-rich; shred small for easier consumption |
| Sweet Potato (small piece) | Weekly | Good vitamins A and C |
| Red / Yellow Bell Pepper | Weekly | Vitamin-rich; turtles like bright colors |
| Green Beans | Weekly | Good fiber and nutrition |
| Parsnips | Weekly | Vitamins A and C; good for omnivorous turtles |
| Peas (in pod) | Occasional | Good nutrition; moderate phosphorus |
| Broccoli Micro/Greens micro ok | Occasional | Goitrogenic; occasional small florets only |
| Apple (no seeds/core) | Treat | Remove seeds (cyanide); occasional small piece |
| Melon (cantaloupe, watermelon) | Treat | Turtles love melon; remove rind for sliders; occasional |
| Berries (strawberries, blueberries) | Treat | Good antioxidants; occasional handful |
| Mango (no pit) | Treat | Remove pit; occasional small piece |
| Banana (small) | Rare Treat | High phosphorus; very occasional use |
| Avocado | NEVER | All parts toxic to turtles - persin poisoning |
| Rhubarb | NEVER | Oxalic acid - fatal for turtles |
| Oranges / Citrus | Avoid | High acid + oxalates - disrupts gut flora |
| Cabbage (excess) | Avoid | Goitrogenic; liver/kidney risks |
| Iceberg Lettuce | Avoid | Nutritionally empty - only water; use romaine instead |
| Processed meat / dairy / bread | NEVER | No processed human foods - no nutritional benefit, causes harm |
| Spinach (regular) | Avoid | High oxalates block calcium for shell health |
💡 Pro Tips for Aquatic & Box Turtles
- Red-eared sliders must eat in water - they need water to swallow. Float greens in the tank
- A good serving of vegetables = roughly the size of the turtle's shell
- Use an aquarium net to remove debris after feeding to keep tank water clean
- Young aquatic turtles are more carnivorous - gradually introduce more plant material as they age
- Box turtles eat on land - present food in a shallow dish; balanced 50/50 diet at all life stages
🦖 Argentine Tegu (Salvator merianae)
Omnivore - Adults: 60% protein, 30% vegetables, 10% fruit - Variety is key
Adults: 60% Protein / 30% Veg / 10% Fruit
Juveniles: 90% Protein / 10% Veg
Tropical fruits preferred
| Food | Frequency | Notes |
|---|---|---|
| Collard Micro/Greens micro ok | Weekly | Best staple green for tegus; good Ca:P |
| Dandelion Greens & Flowers micro ok | Weekly | Excellent calcium; mix into vegetable portion |
| Arugula Micro/Greens micro ok | Weekly | Low oxalates; good variety green for tegus |
| Pea Shoot Micro/Greens / Spring Mix micro ok | Weekly | Easy variety greens; good rotation items |
| Hibiscus (leaves & flowers) | Weekly | Nutritious edible flowers; good for adding variety |
| Cactus Pads | Weekly | Excellent Ca:P; tegus enjoy them |
| Acorn / Butternut Squash | Weekly | Good vitamins; part of vegetable rotation |
| Bell Peppers (all colors) | Weekly | Good vitamin C; tegus respond well to colorful foods |
| Carrots (grated or small pieces) | Weekly | Vitamin A; part of vegetable mix |
| Okra (raw) | Weekly | Good fiber and nutrients |
| Mustard Micro/Greens micro ok | Weekly | Good calcium; mild goitrogenic - rotate |
| Zucchini (raw) | Occasional | Mild and hydrating; small part of vegetable variety |
| Turnip Micro/Greens micro ok | Occasional | Good calcium; part of leafy green rotation |
| Asparagus (raw) | Occasional | Good nutrients; moderate phosphorus |
| Lentils (cooked) | Occasional | Adds plant protein variety; cooked only |
| Papaya | Treat | Top recommended fruit for tegus - excellent enzymes and vitamins |
| Mango | Treat | High vitamin A; tegus enjoy tropical fruits |
| Blueberries / Raspberries | Treat | Antioxidant-rich; good occasional treats |
| Kiwi | Treat | Tegus enjoy kiwi; moderate oxalates - occasional |
| Figs / Grapes | Treat | Occasional; watch sugar content |
| Peach / Plum / Nectarine (no pit) | Treat | Remove pits always; occasional treat |
| Apple / Pear (no seeds) | Treat | Remove seeds; limit high-sugar varieties |
| Strawberries | Treat | Good antioxidants; occasional use |
| Melon (watermelon, cantaloupe) | Treat | Hydrating; no seeds; occasional treat |
| Avocado | NEVER | Persin toxicity - can cause death |
| Citrus fruits | Avoid | Too acidic for tegus; causes GI distress |
| Rhubarb | NEVER | Lethal oxalic acid |
| Onion / Eggplant | NEVER | Toxic to tegus |
| Spinach (regular) | Avoid | High oxalates block calcium; far better greens available |
| Kale / Brassica family (frequent) | Limit | Goitrogenic; include only in small rotation amounts |
| Iceberg / Romaine lettuce as staple | Avoid | No nutritional value - fill your tegu's belly with something better |
| Rosemary / Sage (regular) | Avoid | Noted as problematic for tegus in care guides |
| Seeds / Fruit pits | NEVER | Apple, cherry, peach, plum pits contain cyanide compounds |
💡 Pro Tips for Argentine Tegus
- Whole prey (mice, quail) are nutritionally superior to processed meat - they include bones for calcium
- Adults eat only 2x/week - tegus easily become obese with overfeeding; fruit especially should be limited
- Never hand-feed tegus - they will associate your hand with food and bite; always use tongs or a bowl
- Vegetables can be mixed with protein (ground turkey, dog food) to encourage eating
- Supplement with calcium powder on every vegetable feeding; add multivitamin every 2 weeks
🌿 Universal Reptile Feeding Tips
These apply across all herbivorous and omnivorous reptile species.
UVB Lighting Is Non-Negotiable
Even a calcium-rich diet fails without proper UVB exposure. UVB wavelengths (290-315 nm) are needed for reptiles to synthesize vitamin D3 in their skin - without D3, calcium cannot be absorbed from the gut. Glass filters out 100% of UVB, so a tank near a window will not help. Replace UVB bulbs every 6-12 months even if still lit.
The 2:1 Calcium to Phosphorus Rule
Every meal you feed your reptile should have a Ca:P ratio as close to 2:1 as possible. When phosphorus exceeds calcium, the body leaches calcium from bones, causing metabolic bone disease (MBD). Build meals around high-Ca:P staples (collard greens, dandelion) and limit high-phosphorus foods (bananas, corn, most seeds).
Supplement Wisely
Dust food with plain calcium carbonate powder (no D3) if your reptile has proper UVB. Use calcium with D3 only if UVB is inadequate. Add a reptile multivitamin 1-2x/month. Never over-supplement - too much vitamin A or D3 causes hypervitaminosis, which is as dangerous as deficiency.
Variety Is Medicine
Aim for at least 3-5 different greens per salad bowl. No single food provides complete nutrition. Rotating foods prevents nutritional gaps, avoids toxin buildup from any one source, keeps animals interested in eating, and reduces the risk of goitrogen or oxalate accumulation from any single type of plant.
Oxalates: The Hidden Calcium Thief
Oxalic acid in foods like spinach, beet greens, Swiss chard, and rhubarb binds calcium in the gut, making it completely unavailable to the reptile. Long-term feeding of high-oxalate foods leads to MBD and can cause lethal calcium oxalate crystal deposits in the kidneys. Rhubarb is especially dangerous - avoid entirely.
Temperature Affects Digestion
Reptiles are ectotherms - they cannot digest food without proper basking temperatures. Always feed during active periods and ensure basking spots are at species-appropriate temperatures. Food left uneaten in the enclosure for 4+ hours should be removed to prevent bacterial growth, especially in warm enclosures.
The Goitrogen Problem
Goitrogenic foods (kale, broccoli, cabbage, Brussels sprouts, mustard greens) interfere with iodine absorption and can enlarge the thyroid gland (goiter) when fed daily. These foods are fine in rotation but should never be the sole or daily green for any species. Supplement with iodine if these foods are fed frequently.
Fruit Is Dessert, Not a Meal
Even the safest fruits are high in sugar and typically have poor Ca:P ratios. Think of fruit as candy for your reptile - enjoyable, occasional, and limited. No more than 5-10% of total diet for most species. Always remove pits, seeds, and rinds, and wash commercially grown fruit to reduce pesticide exposure.
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