Pet rats are highly intelligent social animals whose welfare needs are frequently undermet.
Pet rat welfare suffers from underestimation of their intelligence and social complexity. Rats kept alone develop depression-like behavioral states that reduce their quality of life and lifespan. Housing quality — adequate space for climbing, nesting, and play — significantly affects both physical and behavioral welfare. The most common health problem, respiratory disease, often reflects inadequate ventilation in too-small enclosures. Despite their short lifespan, rats experience rich emotional and social lives that deserve serious welfare consideration.