Gerbils are highly social animals that suffer significantly in solitary housing, yet many are kept alone due to misunderstandings about their social needs in the pet trade.
Gerbils are among the most social of small companion animals, and solitary housing causes measurable psychological harm. In the wild, gerbils live in close-knit family groups with shared burrow systems, complex social communication, and extensive mutual grooming. Isolated gerbils cannot express these fundamental social behaviors, resulting in chronic frustration, elevated stress hormones, and high rates of stereotypic bar-chewing and repetitive running. Welfare-centered gerbil keeping requires same-sex pairs or small groups bonded from a young age, large enclosures with deep substrate for burrowing, and enrichment that engages natural foraging and digging behaviors. Pair housing is not difficult to achieve and is the minimum acceptable standard for gerbil welfare.