Enrichment programmes in zoos have evolved from simple novelty provision to evidence-based welfare interventions targeting specific behavioural needs of individual animals.
Zoo enrichment has matured from an afterthought to a central pillar of modern zoo animal welfare practice. Early enrichment programmes focused on novel objects and food puzzles; contemporary approaches are grounded in behavioural ecology, targeting the specific foraging, social, territorial, and cognitive motivations of each species. The most sophisticated programmes are individualised — recognising that even within species, individual animals have different preferences and histories that affect what enrichment is meaningful. Research has established that animal-controlled enrichment, which allows the animal to initiate interaction rather than receiving stimulation at human discretion, produces the strongest welfare benefits. Evaluation frameworks measure enrichment effectiveness through behavioural observation, allowing iterative improvement over time.