Commercial hamster cages sold in pet shops are almost universally inadequate for hamster welfare needs.
The commercial hamster cage industry sells cages that cannot meet the welfare needs of hamsters. Insufficient space prevents natural ranging behaviour leading to chronic frustration and stereotypies. Small wheels cause spinal deformities when hamsters curl to run. Social isolation is appropriate for Syrian hamsters but lack of environmental complexity causes boredom. Inadequate burrowing substrate prevents natural denning behaviour. Many hamsters live short lives of several years in states of chronic welfare compromise.