Food-based enrichment that requires effort to obtain is among the most effective welfare interventions for zoo animals, engaging foraging motivation while providing nutrition.
Food-based enrichment addresses one of the most fundamental welfare gaps in captive settings: the absence of foraging activity that occupies a substantial proportion of wild animals' time. A bear that locates all its food in a bowl in seconds has met its caloric need but expressed none of its foraging behaviour. Scatter feeding, puzzle feeders, frozen food items, and food hidden within enrichment structures extend the engagement with food from seconds to hours, engaging the full foraging sequence of searching, locating, and extracting. The effectiveness of food enrichment does not diminish with familiarity to the same degree as non-food enrichment because of the powerful and persistent motivation for food engagement.