Small mammalsâguinea pigs, gerbils, degus, chinchillas, and hamstersâare popular companion animals whose welfare needs are frequently misunderstood. Often perceived as low-maintenance starter pets, these species have complex behavioral, social, and environmental requirements that conventional pet keeping often fails to meet.
Guinea pigs are highly social herd animals that suffer from isolation. A lone guinea pig is a welfare-compromised guinea pigâthey require same-species companionship. They need significantly more space than conventional cages provide: minimum indoor space should allow continuous running and multiple resting areas. Guinea pigs cannot synthesize vitamin C and develop scurvy without dietary supplementationâa common welfare failure in poorly informed husbandry. They require hay as 70%+ of their diet for digestive and dental health.
Gerbils are naturally desert burrowers that require deep substrate (minimum 20-30cm) to perform natural digging behavior. Barren glass tanks with superficial bedding deny this fundamental behavioral need. Gerbils are social and should be kept in same-sex pairs or groups. Tail trauma from improper handling (never pick up by the tail) causes de-gloving and tail loss.
Degus are highly intelligent, social, and active animals requiring large, complex enclosures with climbing opportunities, dust baths for coat maintenance, and companionship. They are highly susceptible to diabetes from inappropriate sugary diets. Their complex social and environmental needs make them unsuitable for small, barren cage environments.
All small mammal species should be acquired from ethical sources (rescue organizations preferred), with welfare research completed before acquisition. Many small mammals in rescues reflect welfare failures in naive previous ownersâeducation is a primary welfare intervention.
Part of the Animal Welfare Hub â 2381+ pages of evidence-based animal welfare information.