What do Argentine tegus eat?
The short answer
Argentine tegus are large, intelligent omnivores with substantial appetites. The diet spans whole prey, insects, eggs, vegetables and fruit, and variety matters as much as any single item. They are big enough that feeding errors compound quickly, and obesity in captive tegus is common.
Feeding schedule by age
| Life stage | Diet balance | How often | Notes |
|---|---|---|---|
| Juvenile | Protein-led: insects and whole prey | Daily | Rapid growth |
| Sub-adult | Protein with increasing plant matter | Every 1-2 days | Transitional |
| Adult | Mixed: whole prey, vegetables, fruit | 2-3 times weekly | Large meals, spaced |
| Pre-brumation | Reduced intake | Tapering | Normal seasonal behaviour |
What to feed
| Food | Role | Why |
|---|---|---|
| Whole prey (rodents, chicks) | Staple protein | Bone and organ supply calcium and vitamin A |
| Insects | Protein | Roaches, crickets, superworms |
| Eggs | Protein | Well accepted; cooked or raw in moderation |
| Dark leafy greens | Plant | Collard, dandelion, mustard |
| Squash, green beans | Vegetables | Rotate |
| Berries, melon, banana | Fruit | Genuine part of the diet in this species |
| Calcium powder | Supplement | Especially with non-whole-prey meals |
What never to feed
Items in this table are either outright toxic or cause predictable long-term harm. This is the part of the page worth reading twice.
| Do not feed | Why |
|---|---|
| Muscle meat as a staple | Lacks calcium; whole prey is far better. |
| Free-feeding a large tegu | Obesity is common and hard to reverse in a big lizard. |
| Avocado | Toxic. |
| Onion and garlic | Toxic. |
| Dog food as the main protein | Too rich and fatty as a staple. |
Where good sources disagree
Care sheets do not all say the same thing, and pretending otherwise helps nobody. These are the real points of difference between the sources cited at the foot of this page, and what we think the safe reading is.
How much fruit adults should take.
Tegu diets in the literature vary widely on the fruit share, partly because wild Salvator merianae are genuine generalists whose intake shifts seasonally. All accounts include fruit as a real component, unlike for most carnivorous lizards.
What most argentine tegu feeding advice gets wrong
Whole prey, not meat.
A tegu fed chicken breast or beef is getting protein without the calcium, minerals and vitamin A that come with bone, organ and hide. Whole prey items are nutritionally complete in a way that butchered meat is not, and this is the single most common protein mistake with large omnivorous lizards.
Size means errors compound.
An overweight gecko is a manageable problem. An overweight four-foot tegu is a serious one, and reversing it takes a long time. Feed adults on a schedule of two to three times weekly with real variety, rather than daily meals that the animal will certainly accept.
Reduced winter appetite is normal.
Argentine tegus brumate, and appetite falls away beforehand. A tegu eating less as the season cools is usually behaving normally rather than becoming ill, though weight should still be monitored.
Common questions
What do Argentine tegus eat?
They are omnivores: whole prey such as rodents and chicks, insects, eggs, dark leafy greens, vegetables and fruit. Juveniles are more carnivorous and adults take proportionally more plant matter. Variety matters as much as any individual item.
Can tegus eat raw meat?
Whole prey is much better than muscle meat. Chicken breast or beef supplies protein but lacks the calcium, minerals and vitamin A found in bone, organ and hide. Whole rodents and chicks are nutritionally complete; butchered meat is not.
How often should I feed an adult tegu?
Roughly two to three times weekly, with real variety across meals. Juveniles eat daily while growing. Tegus are large and food-motivated, and obesity is a common and difficult-to-reverse problem in captive adults.
Why has my tegu stopped eating in winter?
Argentine tegus brumate, and appetite drops substantially beforehand. This is normal seasonal behaviour. Monitor weight, and seek veterinary advice if refusal is accompanied by significant weight loss or other symptoms.