#throwbackthursday November 07, 2002 Chimpanzee Ai inserts a 100-yen coin into the slot using her mouth. Her son Ayumu watches intently and learns his mother's skill.

#throwbackthursday November 09, 2002 There is a stream of running water in the outdoor enclosure. Chimpanzees don't like to swim, but it seems they like to watch the creatures that live in the stream.