what do garter snakes eat
Garter snakes are carnivores that eat a wide variety of small animals, mainly worms, slugs, amphibians, fish, and small rodents.
Quick Scoop: What Do Garter Snakes Eat?
Everyday menu in the wild
Wild garter snakes are opportunistic and eat almost anything they can overpower and swallow whole. Common prey includes:
- Earthworms and nightcrawlers (but not small redworms, which can be toxic to them).
- Slugs and snails.
- Leeches in damp or aquatic areas.
- Insects like grasshoppers and other similar invertebrates.
- Amphibians: frogs, toads, tadpoles, salamanders, and even frog eggs.
- Small fish and minnows, especially where snakes live near water.
- Small mammals such as mice and other tiny rodents when available.
They swallow prey whole and adjust their diet based on what’s most available in their habitat (dry land vs. near water).
Dry land vs. near water
Garter snakes change their diet depending on where they live.
- In drier areas they are more likely to eat: earthworms, lizards, birds, snails, slugs, and small rodents.
- Near ponds, streams, or marshes they switch more to: fish, tadpoles, frogs, toads, salamanders, and leeches.
They are unusually tolerant of the toxins produced by many toads and some frogs, so they can eat prey that would deter other predators.
Pet garter snakes: what owners feed
For pet garter snakes, keepers often focus on safe, nutritionally balanced prey. Common options are:
- Appropriately sized frozen–thawed mice (often recommended as a staple once the snake accepts them).
- Earthworms as an easy starter food, especially for young or picky snakes, though they are low in calcium so not ideal as the only food long-term.
- Certain fish species (offered carefully to avoid fish high in thiaminase, which can cause vitamin B1 deficiency).
Specialists recommend avoiding vegetable matter (they cannot digest it) and being cautious with wild frogs and toads because of parasites that captive snakes may not handle well.
Key facts at a glance (HTML table)
| Setting | Main foods | Notes |
|---|---|---|
| Wild, dry habitat | Earthworms, slugs, snails, lizards, small birds, mice/rodents | Eats anything small enough to overpower and swallow. | [1][5][3][9]
| Wild, near water | Fish, tadpoles, frogs, toads, salamanders, leeches | Very adaptable; can handle toxins from some amphibians. | [3][9]
| Common pet diet | Frozen–thawed mice, earthworms, select fish | Mice often used as staple; worms and fish as supplements or for picky eaters. | [4][7][8]
| Foods to avoid | Vegetables, many insects as sole diet, risky wild amphibians, redworms | They are strict carnivores; some worms and fish species can be harmful or nutritionally poor. | [7][4][3]
Information gathered from public forums or data available on the internet and portrayed here.