Otters in zoological settings are highly popular but require extensive aquatic environments, social groupings, and enrichment to meet their energetic and cognitive welfare needs.
Otter welfare in zoological settings depends critically on three factors: social grouping, aquatic environment quality, and cognitive enrichment. Otters are highly social, forming family groups with strong bonds — solitary individuals show severe psychological deterioration through repetitive stereotypic behaviours. Pool design must allow genuine swimming, diving, and foraging; small, shallow water features are wholly inadequate. Cognitive enrichment is essential for these intelligent, curious animals: food hidden in ice blocks, puzzle feeders, and novel objects prevent the boredom that causes welfare decline. The popularity of Asian small-clawed otters as exotic pets is a significant welfare concern — these animals' complex social, spatial, and cognitive needs cannot be met in domestic settings, and the pet trade drives capture from wild populations.