Gerbils are highly social, active small mammals that thrive in pairs or small groups, yet their specific behavioral and environmental needs are often underestimated by owners who keep them in bare, small enclosures.
The most common welfare problems in pet gerbils are social isolation and inadequate space for natural behaviors. A single gerbil cannot fulfill its need for social interaction and play, leading to lethargy, stereotypies, and shortened lifespan. Enclosures without deep substrate prevent burrowing - a highly motivated behavior in gerbils. 'Declanning' - when an established pair or group suddenly turns aggressive - can be lethal if not identified quickly. Tail degloving injuries occur when gerbils are picked up by the tail, a practice that should never occur. Providing pair housing, deep substrate, and enrichment dramatically improves gerbil welfare.