Pieko's a reason for living time (also known as snack time) Nogeyama Zoo Chimpanzee 202204

This channel is a video that discusses the fascination of great apes (#gorilla、#chimpanzee、#orangutan) and enrichment.
Apes are the most intelligent animals and are therefore susceptible to mental illness.
Environmental enrichment is a measure to reduce mental and physical stress and lead a happy life from the standpoint of apes, not from the convenience and emotions of human beings.