Hamsters are small, curious and mostly nocturnal. They typically live 2 to 3 years. Their needs are often underestimated, especially when it comes to space.
At a glance
| Lifespan | About 2–3 years |
| Social needs | Syrian hamsters must live alone; dwarf species vary and may fight |
| Diet | Quality hamster mix or pellets, plus small amounts of fresh food |
| Activity | Active at night; can run long distances every night |
Choosing a species
- Syrian (golden) hamsters are the largest and most common. Adults are strictly solitary and will fight if housed together.
- Dwarf hamsters (such as Roborovski, Campbell’s and Winter White) are smaller and faster. Some can live in pairs, but fights are common and may be serious, so many keepers house them individually.
Housing
Many cages sold for hamsters are too small. Hamsters in cramped cages often show stress behaviors such as bar-biting or constant climbing.
- Floor space matters more than height. Some animal welfare organizations recommend at least 100 × 50 cm (about 40 × 20 in) of unbroken floor space.
- Deep bedding: hamsters are natural burrowers. Provide at least 20 cm (8 in) of paper-based or other safe bedding in part of the enclosure. Avoid cedar and pine shavings and fluffy cotton-like bedding, which can wrap around limbs.
- A solid wheel of the right size: the hamster’s back must stay straight while running. For Syrians that usually means a wheel of at least 28 cm (11 in) across; smaller for dwarfs. Avoid wheels with rungs or gaps.
- Provide hides, tunnels, chew items and a shallow sand bath (use plain, dust-free sand, not dust).
- Place the cage away from direct sun, drafts and loud noise.
Diet
- A quality hamster mix or pellets as the base
- Small amounts of fresh vegetables such as cucumber, broccoli or carrot
- Occasional protein such as a little plain cooked egg
- Fresh water daily
Avoid citrus fruit, onion, garlic, chocolate, sugary or salty snacks, and raw beans. Hamsters hoard food, so check their stash regularly for fresh food that has spoiled.
Health warning signs
Because hamsters are small, they can become seriously ill quickly. See a veterinarian experienced with small mammals if you notice:
- A wet, dirty tail area or diarrhea
- Weight loss or reduced appetite
- Overgrown teeth
- Lumps, hair loss or constant scratching
- Lethargy or a hunched posture
Handling
Let a new hamster settle for several days before handling. Avoid waking a sleeping hamster, which can make it bite. Handle it low over a soft surface, as a fall from standing height can cause serious injury.
Common mistakes
- Buying a small starter cage with a tiny wheel
- Housing Syrian hamsters together
- Using shallow bedding that prevents burrowing
- Expecting a daytime pet for young children, who may be asleep when the hamster is active
Sources
- RSPCA hamster care guidance
- Recommendations from animal welfare organizations on enclosure and wheel size