Using the Mesh Ceiling as a Food Puzzle to Encourage Foraging Behaviour in Caged Rhesus Macaques (Macaca Mulatta)

An attempt was made to encourage more foraging behaviour in eight pair-housed adult rhesus macaques (Macaca mulatta). No special device and no special food were used. Daily commercial dry food rations (238g per animal) consisting of 33 bar-shaped or 16 star-shaped biscuits per animal were placed on the mesh ceiling of the cages instead of […]