Hamsters are among the most poorly housed companion animals globally. Standard pet shop cages and recommended care practices fail to meet basic behavioural needs, causing chronic stress and shortened lifespans.
Hamster welfare represents one of the most significant gaps between marketing and welfare reality in the companion animal industry. Standard cages sold in pet shops with hamsters are typically 3–5 times smaller than welfare science recommends; wheel sizes are injuriously small; substrate depth prevents natural burrowing; and hamsters are routinely sold in pairs that will fight. The result is a population of stressed, chronically under-stimulated animals that develop stereotypic bar-chewing and bar-running behaviour, lose their natural diurnal pattern, and die prematurely. The welfare ideal — large enclosures with deep substrate, adequate wheels, and enrichment for foraging and exploration — is achievable at modest cost and represents a dramatic welfare improvement over current standard practice.