← Emerald Tree Boa care guide

What do emerald tree boas eat?

Emerald Tree Boa (Corallus caninus)
Photo: Eveha via Wikimedia Commons, CC BY-SA 3.0

The short answer

Emerald tree boas have a notably slow metabolism and need far less food than their size suggests. Published guidance is a small to medium rat roughly every two weeks for females and every four for males. Feeding this species on a ball python's schedule produces obesity, regurgitation and long-term organ damage.

Feeding schedule by age

Life stageDiet balanceHow oftenNotes
NeonateSmall preyEvery 7-10 daysGrowing
Adult femaleSmall to medium ratAbout every 2 weeksPer published guidance
Adult maleSmall to medium ratAbout every 4 weeksMales need less

What to feed

FoodRoleWhy
Frozen-thawed rodentsStapleSafer than live; thaw in the fridge, warm in warm not hot water
RatsStapleSmall to medium sizes
MiceJuvenilesWhile small

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 feedWhy
Live prey left unattendedRodents bite and can seriously wound or kill a snake.
Prey wider than the snake's thickest pointRegurgitation and injury risk.
Wild-caught rodentsParasite, disease and rodenticide risk.
Meat, eggs or other substitutesSnakes need whole prey for complete nutrition.
A ball python feeding scheduleFar too frequent for this species; causes obesity.
Handling at feeding timeLong teeth and a strong defensive strike.

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.

Whether males and females really differ this much.

The two-week and four-week figures come from species care guidance and reflect the size difference between the sexes. Some keepers feed both on a single intermediate schedule and monitor condition. Nobody recommends feeding either sex weekly.

What most emerald tree boa feeding advice gets wrong

This is the species where overfeeding does the damage.

Emerald tree boas are among the slowest feeders commonly kept. Because they are large and impressive, keepers instinctively feed them like a large python. The result is a fat, frequently regurgitating snake. If you are unsure, err toward the longer interval and judge by body condition.

Red babies are normal.

Neonates are typically born red, orange or brick coloured and become green over roughly their first year. It surprises new buyers regularly and is not a defect or a health problem.

Common questions

What do emerald tree boas eat?

Appropriately sized whole rodents, usually small to medium rats for adults, offered frozen-thawed with long tongs at perch height. They eat nothing else, and the portions are modest relative to their length.

How often should I feed an emerald tree boa?

Published guidance is roughly every two weeks for females and every four weeks for males. Their metabolism is slow, and overfeeding is a far more common mistake than underfeeding. Adjust by body condition rather than by a fixed calendar.

Why is my baby emerald tree boa red?

That is normal. Neonates are usually born red, orange or brick coloured and transition to the adult green over roughly the first year of life. The change is gradual and is not a sign of illness.