Where to put the cage, and whether to cover it at night

A hamster cage can sit on the floor, provided the floor is not drafty, not in a walkway, and not where a dog or cat can reach it. Covering the cage at night is unnecessary and usually counterproductive: hamsters are nocturnal, so night is when the animal is active, and a cover reduces ventilation while blocking nothing it wants blocked. Temperature, drafts and vibration matter far more than height off the ground.

Placement questions come up constantly and get answered with confident rules that have no evidence behind them. The useful way to approach it is to work out what an enclosure is actually exposed to in a given spot, because that is what the animal experiences.

Can a cage be on the floor?

Yes, with three conditions. Floor level is where drafts run, so a cage against an external door or under a badly fitting window is in the worst spot in the room. Floor level is also where feet go, and an enclosure in a hallway gets bumped. And floor level is reachable by every other animal in the house.

Where none of those applies, the floor is fine and has one real advantage: the enclosures that actually clear a published floor-area minimum are large and heavy, and a four-foot enclosure holding ten inches of substrate is safer on the floor than on furniture not rated for it. If choosing between a compliant enclosure on the floor and an undersized one on a table, take the floor every time.

Should you cover the cage at night?

Generally no. The instinct comes from birds, where covering a cage genuinely does settle a diurnal animal for the night. Hamsters, ferrets and to a degree rabbits are most active in the dark, so at the point you would be covering the enclosure the animal is starting its day.

Covering also costs something: it reduces airflow through a mesh top, which is the main ventilation path on most enclosures, and it traps humidity from a damp substrate. A partial cover to block a specific problem — a streetlight, a television — is reasonable, and in that case cover one side rather than the top.

Temperature

This is the placement factor with real published figures attached, and they vary by species.

Ferrets are the heat-sensitive case: VCA publishes a ceiling of 80F (27C), which rules out a conservatory, a south-facing window in summer, or a spot above a radiator. Heat stress in a ferret develops fast.

The RSPCA's guinea pig figures give a usable band for the small species generally: 17-20C ideal, below 15C move indoors, above 26C heatstroke risk. That band is a better placement guide than any rule about furniture.

For outdoor rabbit housing the temperature question becomes a construction question — insulation, draft-proofing and rain exposure — which is covered in protecting an outdoor hutch in winter.

Drafts, sun and damp

A draft is worse than a cold room. A steady 15C is manageable for most of these species; 18C with a draft across the enclosure is not, because the animal cannot escape moving air even inside a nest. Check by holding the back of your hand where the enclosure will sit, at enclosure height, with the room's doors in their usual state.

Direct sun through glass is the other common error, and it is worst for exactly the enclosures that are otherwise best. A glass or acrylic enclosure in a sunbeam heats like a greenhouse, and an animal in a burrow underneath it cannot leave.

Noise and vibration

Small mammals hear well above the human range, and some routine household sources produce significant ultrasound. The practical implication is modest but real: avoid standing an enclosure on or directly against a running appliance — a washing machine, a fridge, a subwoofer — because vibration transmits through furniture far better than air.

A placement checklist

1. 1.No draft at enclosure height with the room's doors in their normal state.
2. 2.No direct sun at any point in the day, especially for a glass or acrylic enclosure.
3. 3.Temperature inside the published band for the species, checked with a thermometer at enclosure height rather than by feel.
4. 4.Out of reach of other pets, which for a floor-level enclosure means a secure lid rather than a hopeful one.
5. 5.Not on or against a vibrating appliance.
6. 6.Stable and rated for the weight. A large enclosure with deep substrate is heavy; a flat-pack shelf is not the place for it.
7. 7.Somewhere you will actually look at it, because the enclosure you walk past daily is the one whose problems get noticed.

One further point, and it is the reason this page sits under standards rather than under hamsters: placement is the cheapest variable to get right and the one people spend the least time on. A compliant enclosure in a bad spot is a worse outcome than a marginal enclosure in a good one, and fixing placement costs nothing but effort.