Hamster & Small Pet Cage Calculator

Why Pet Shop Cages Are Often Too Small

The cages sold alongside small pets in pet shops are almost universally too small by modern welfare standards. A Syrian hamster needs a minimum of 450 square inches of floor space — most starter kits provide 150–200. Switzerland banned the sale of cages under 3,600 square centimetres for hamsters. The UK’s RSPCA recommends cages far larger than what is typically sold.

The Most Common Mistakes

The three most common small pet housing mistakes are: keeping social animals alone (guinea pigs, gerbils, rats), providing inadequate bedding depth for burrowing species (hamsters, gerbils need 6–10 inches minimum), and using wire wheels which cause tail and foot injuries.

Guinea Pigs Cannot Live Alone

Guinea pigs are a social species that genuinely suffer in isolation. A lone guinea pig will show stress behaviours, stop eating, and has a significantly shorter lifespan than those kept in pairs or groups. Same-sex pairs are the minimum — neutered male and female pairs also work well.

Rabbits Need More Space Than Most People Think

A rabbit should never be confined to a cage 24 hours a day. They need a minimum exercise area of 60 square feet in addition to their sleeping space. The Rabbit Welfare Association recommends a living space of at least 3m x 2m x 1m for a pair of average-sized rabbits.