Hamsters have complex behavioral needs rooted in their wild origins as burrowing, foraging animals. Standard small commercial cages fail to meet these needs, causing stereotypic behaviors and poor welfare.
Hamster welfare science has advanced significantly in the past decade, demonstrating that enriched, spacious housing dramatically reduces stereotypic behaviors and improves affective states. Cognitive bias tests show hamsters in enriched environments have more optimistic judgment patterns, a validated indicator of positive emotional states. The gap between welfare science recommendations and commercially available equipment remains large, and consumer education is urgently needed to shift market demand toward appropriate housing.