← Full Campbell’s Hamster guide
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Campbell’s Hamster — care sheet
Phodopus campbelli · Beginner–Intermediate
| Adult size | A small dwarf — about 8–10 cm (3–4 in) long and roughly 23 g on average. |
|---|---|
| Lifespan | Typically about 2–2.5 years as a pet. |
| Enclosure | Far bigger than shop cages, with a solid floor and deep bedding to tunnel. A tank with a ventilated lid, or a narrow-barred cage, suits something this small — with a nest box, sand to dig, and hides. |
| Companionship | Naturally solitary, and although same-sex pairs are sometimes kept, they frequently fail — the PDSA advises against housing Russian dwarves together because of dominance fights, while the RSPCA says it CAN be done with care. The safe default is one per cage. If you try a pair, use litter-mates raised together, a large cage with duplicated resources, and keep a spare cage ready to separate them for good. |
| Temperature | Keep indoors, warm and out of draughts and damp. Too cold and a hamster can drop into a dangerous torpor — warm a cold, stiff hamster gently, offer food and water, and call a vet if unsure. |
| Bedding & substrate | A deep layer of safe paper-based bedding over a solid floor, plus a sand area. Never cotton-wool or fluffy strand bedding. |
| Enrichment & exercise | Nocturnal and active — a large solid axle-free wheel, tunnels, deep sand and safe gnaw items; scatter-feeding suits their foraging. |
| Grooming & upkeep | Self-grooming; a sand bath keeps the coat clean. Provide gnaw items for the continuously-growing teeth. |
| Diet | The strictest low-sugar diet of any pet hamster: a good-quality low-sugar pellet or mix, and NO sugary fruit or treats — Campbell’s and their hybrids carry a real, genetically influenced predisposition to obesity and diabetes. Constant fresh water; avoid selective “muesli” mixes. |
| Supplements | None needed — the priority is keeping sugar OUT of the diet. |
Before you buy
- Can you commit to the strictest low-sugar diet — no fruit or sweet treats at all?
- Can you provide a much larger, deep-bedded enclosure than pet shops sell?
- Do you understand it doesn’t need a friend, and that pairing frequently fails?
- Are you patient with a quick, sometimes-nippy dwarf that takes time to tame?
- Do you have an exotic vet that treats hamsters?
See a small-animal or exotics vet if…
- Excessive drinking or urinating, or unexplained weight change — possible diabetes; see an exotic vet
- A wet, soiled rear end with diarrhoea and low energy — “wet tail” is a fast, often fatal emergency
- Not eating, weight loss, or a hunched, low-energy hamster
- Any lump or swelling, or overgrown front teeth
- A hamster that is cold and stiff (torpor) — warm it gently and seek advice
Never
- Never feed sugary fruit or treats — this is the most diabetes-prone pet hamster.
- Never assume a pair will work — keep a spare cage ready or house singly.
- Never use cotton-wool or fluffy strand bedding, or a wire-mesh floor.
- Never let it get cold enough to risk torpor, or leave it in direct heat.
Common campbell’s hamster questions
How hard are Campbell’s Hamsters to keep — are they good for beginners?
Beginner–Intermediate. Housing is simple, but this is the pet hamster with the highest diabetes risk, so its low-sugar diet is the priority — and it can be a touch nippier than other dwarves, so it takes patience to tame.
What do Campbell’s Hamsters eat?
The strictest low-sugar diet of any pet hamster: a good-quality low-sugar pellet or mix, and NO sugary fruit or treats — Campbell’s and their hybrids carry a real, genetically influenced predisposition to obesity and diabetes. Constant fresh water; avoid selective “muesli” mixes.
How big an enclosure do Campbell’s Hamsters need?
Far bigger than shop cages, with a solid floor and deep bedding to tunnel. A tank with a ventilated lid, or a narrow-barred cage, suits something this small — with a nest box, sand to dig, and hides.
Do Campbell’s Hamsters need a companion, or can they live alone?
Naturally solitary, and although same-sex pairs are sometimes kept, they frequently fail — the PDSA advises against housing Russian dwarves together because of dominance fights, while the RSPCA says it CAN be done with care. The safe default is one per cage. If you try a pair, use litter-mates raised together, a large cage with duplicated resources, and keep a spare cage ready to separate them for good.
What temperature do Campbell’s Hamsters need?
Keep indoors, warm and out of draughts and damp. Too cold and a hamster can drop into a dangerous torpor — warm a cold, stiff hamster gently, offer food and water, and call a vet if unsure.
What bedding and substrate do Campbell’s Hamsters need?
A deep layer of safe paper-based bedding over a solid floor, plus a sand area. Never cotton-wool or fluffy strand bedding.
What enrichment and exercise do Campbell’s Hamsters need?
Nocturnal and active — a large solid axle-free wheel, tunnels, deep sand and safe gnaw items; scatter-feeding suits their foraging.
What grooming and upkeep do Campbell’s Hamsters need?
Self-grooming; a sand bath keeps the coat clean. Provide gnaw items for the continuously-growing teeth.
What supplements do Campbell’s Hamsters need?
None needed — the priority is keeping sugar OUT of the diet.
How big do Campbell’s Hamsters get?
A small dwarf — about 8–10 cm (3–4 in) long and roughly 23 g on average.
How long do Campbell’s Hamsters live?
Typically about 2–2.5 years as a pet.
What are the signs Campbell’s Hamsters are sick or need a vet?
See a small-animal or exotics vet if you notice: Excessive drinking or urinating, or unexplained weight change — possible diabetes; see an exotic vet; A wet, soiled rear end with diarrhoea and low energy — “wet tail” is a fast, often fatal emergency; Not eating, weight loss, or a hunched, low-energy hamster; Any lump or swelling, or overgrown front teeth; A hamster that is cold and stiff (torpor) — warm it gently and seek advice.
Sources: Animal Diversity Web — Phodopus campbelli · Merck Veterinary Manual — Hamsters (Exotic & Laboratory Animals) · PDSA — Hamsters as pets · RSPCA — Keeping hamsters as pets. Written and fact-checked by The Hayfold Team — kind, general guidance, not a diagnosisand not a substitute for an exotics vet. hayfold.com