Rats are highly intelligent and social animals that make rewarding companions when their complex needs are met. Poor understanding of rat welfare leads to significant preventable suffering in this commonly kept species.
Rats are among the most cognitively sophisticated companion animals relative to their size, capable of learning their names, navigating mazes, and showing empathy toward companions in distress. Their welfare needs are substantial: social housing is not optional, and alone-kept rats show chronic stress. Their activity needs are poorly served by small barren cages — they benefit from multi-level environments with hammocks, tunnels, and foraging opportunities. Because their lifespan is short, health monitoring is important: respiratory infections are common, and mammary tumours — which develop in the majority of unspayed females — require prompt veterinary attention. The combination of high intelligence, social complexity, and short lifespan means rat welfare depends heavily on owner knowledge and commitment to proactive care.