What Can’t Hamsters Eat? 10 Toxic Foods to Avoid
A hamster weighs about 30 grams — at that size, even a crumb of the wrong food is a full dose. These are the human foods most dangerous to hamsters. A curated reference, not an exhaustive list.
Updated 2026-10-05.
| Item | Severity | Toxic compound | Key symptoms | Details |
|---|---|---|---|---|
| Chocolate | ⛔ Unsafe | Theobromine, caffeine | Tremors, rapid heartbeat | Check → |
| Onion | ⛔ Unsafe | Organosulfur compounds | Anemia, weakness | Check → |
| Garlic | ⛔ Unsafe | Organosulfur compounds | Same as onion | Check → |
| Raw beans | ⛔ Unsafe | Phytohaemagglutinin (lectin) | Severe vomiting, diarrhea | Check → |
| Alcohol | ⛔ Unsafe | Ethanol | Disorientation, coma | — |
| Caffeine | ⛔ Unsafe | Caffeine (methylxanthine) | Restlessness, rapid heartbeat | Check → |
| Apple seeds | ⛔ Unsafe | Amygdalin (releases cyanide) | Breathing difficulty | — |
| Raw potato | ⛔ Unsafe | Solanine | Stomach upset, lethargy | — |
| Tomato leaves | ⛔ Unsafe | Solanine | Stomach upset, weakness | — |
| Wild mushrooms | ⛔ Unsafe | Various toxins | Vomiting, liver damage | — |
Severity matches the verdict on each food’s full Eaoae check. This is a curated reference, not an exhaustive list — when in doubt, ask before sharing.
Important: this list is for reference only and is not veterinary advice.
If your hamster may have eaten something dangerous, contact your veterinarian immediately.
