Sunday Setup: One Hide Per Guinea Pig, Plus One Spare (and Give Each Two Doors)
This week’s setup job: count your guinea pigs, then count their hides. The RSPCA’s guidance is that refuge areas “should exceed the number of animals by one.” So two pigs get three hides and three pigs get four. If you can, give each hide two ways out.
Why one hide per pig isn’t enough
Guinea pigs are prey animals. The RSPCA notes that they “feel vulnerable in unprotected open spaces and like to stay in contact with solid surfaces,” and that being repeatedly frightened without a place to hide causes stress. In a pair or a group, a hide count that matches the pig count still leaves a gap. The lower-ranking pig can end up in the open middle of the cage. The spare means a frightened pig always has somewhere to go.
A 2024 study in the Journal of the American Association for Laboratory Animal Science paired unfamiliar adult male guinea pigs. The team credited “ample space, separate shelters for each animal” and the absence of females with helping the pairs settle into stable, friendly bonds.
Why two doors matter
This is keeper wisdom rather than a formal standard, but rescues and experienced keepers repeat it widely: a hide with only one entrance can become a trap. If a cagemate blocks the doorway, the pig inside can’t get away, and a cornered guinea pig may defend itself instead of leaving. A hide with two openings, or a tunnel open at both ends, lets the pig inside leave by the back door.
How to do it this week
- Count and add. Pigs + 1 = hides. A cardboard box with two doorways cut in it counts, as does a tunnel or a wooden hide with two arches.
- Spread them out. Three hides crammed in one corner work like one big hide. Put them in different areas of the cage so no single pig can guard them all.
- Check the doorways. Each opening should be wide enough for your largest pig to get through easily, without squeezing.
- Mind the radiator. It’s heating season. The RSPCA advises keeping guinea pig housing away from direct heat sources such as radiators and sunny windows, and away from draughts. A cosy hide right next to a heater can overheat a pig that is avoiding the open cage.
- Add hay. The RSPCA also suggests hay for tunnelling and hiding. If you use fleece, our fleece bedding guide covers keeping it clean.
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Shop this designWhen it’s more than a setup problem
Extra hides help with ordinary jostling. They don’t fix real fighting. If you see bite wounds, blood, or scabs, or one pig keeps getting chased off food and water, separate them safely and book a vet check for any injuries. Watch the pig being bullied, too: steady weight loss is a quiet sign that something is wrong, which is why we suggest a weekly weigh-in.
For the full picture on space, diet, and companionship, see our guinea pig care guide. Then go count hides.
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Oliver Grant is your go-to expert for all things related to small mammals. With 15 years of hands-on experience raising and caring for rabbits, guinea pigs, hamsters, and ferrets, Oliver brings a wealth of knowledge to his readers.
