Blue Tongue Skink Diet Overview
Blue tongue skinks are true omnivores — in the wild they eat a wide variety of plant matter, invertebrates, and occasionally small vertebrates. In captivity, replicating this dietary variety is important for long-term health. A balanced BTS diet requires a thoughtful mix of animal protein, vegetables, and occasional fruit.
As a general adult guideline:
- Animal-based protein: roughly 50–60%
- Vegetables and leafy greens: the remainder
- Fruit: occasional, in small amounts
Young blue tongue skinks generally require a higher proportion of protein than adults. Adjust ratios based on the skink's age, body condition, and the guidance of a reptile veterinarian familiar with the species.
Vegetables & Leafy Greens
Variety is one of the most important principles of BTS feeding. Good options include:
- Collard greens
- Dandelion greens and flowers
- Endive and escarole
- Mustard greens
- Turnip greens
- Butternut squash (cooked or raw)
- Acorn squash
- Green beans
- Snap peas
Avoid spinach, beet greens, and Swiss chard as staples — these are high in oxalates which bind calcium. Iceberg lettuce has minimal nutritional value and should be avoided.
Protein Sources
- High-quality wet dog or cat food — choose products with named animal ingredients and avoid those containing onion, garlic, or excessive fat
- Cooked lean meats — chicken, turkey, or lean beef; always cooked, never raw
- Cooked eggs — scrambled or hard-boiled; a good occasional protein source
- Dubia roaches, crickets, superworms — gut-loaded and dusted with calcium before feeding
- Earthworms and nightcrawlers — excellent natural protein source
- Silkworms and hornworms — nutritious and well-accepted by most skinks
- Canned snails (escargot, no salt or garlic) — a popular treat and good protein source
- Cooked fish — occasional; avoid high-mercury species
Avoid raw meat and raw eggs due to bacterial contamination risk. Avoid processed meats and anything with added salt, garlic, or onion.
Fruit
Fruit should be used sparingly as an occasional treat. Good options include blueberries, strawberries, mango, and papaya in small amounts. Citrus is generally best avoided.
Feeding Frequency by Age
| Age | Feeding Frequency |
|---|---|
| Hatchling / Baby | Daily |
| Juvenile | About 3 times per week |
| Sub-adult | About 2 times per week |
| Adult | 1–2 times per week |
Blue tongue skinks are prone to obesity in captivity — adjust feeding frequency based on the individual skink's body condition and activity level rather than following a fixed schedule mechanically.
Supplementation
Calcium and multivitamin supplementation should follow the product label and the skink's UVB setup, diet, species/subspecies, and veterinary guidance. Avoid routine over-supplementation, particularly when feeding a varied diet that already includes calcium-rich foods. If you are unsure about supplementation for your specific setup, consult a reptile veterinarian.
What to Avoid
- Avocado — toxic
- Onion and garlic — toxic
- Rhubarb — toxic
- Raw meat and raw eggs — bacterial contamination risk
- Fireflies and lightning bugs — toxic to all reptiles
- Wild-caught insects — pesticide and parasite risk
- High-fat dog or cat foods — can contribute to fatty liver disease over time
- Excessive fruit — high sugar content; use sparingly
FAQ
Can blue tongue skinks eat cat food?
High-quality wet dog or cat food can be used as part of a balanced diet and has a long history of use in BTS keeping. Choose a product with named animal ingredients and avoid those containing onion, garlic, or excessive fat. It should form part of the protein portion of the diet rather than the entire meal.
How do I know if my blue tongue skink is overweight?
A healthy adult BTS should have a rounded, full body without visible fat deposits around the neck, limbs, or tail base. If you suspect your skink is overweight, ask a reptile veterinarian to evaluate its body condition before making major dietary changes.
My blue tongue skink won't eat vegetables — what do I do?
Mix vegetables into the protein portion of the meal so the skink ingests them together. Finely chop or grate vegetables so they're harder to pick around. Offer a wide variety of vegetables to find ones the skink prefers.
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