”Play is older than culture (…), animals have not waited for man to teach them their playing. We can safely assert, even, that human civilization has added no essential feature to the general idea of play. Animals play just like men.” Johan Huizinga 1938: Homo Ludens.
AIBO: The most highly developed robotic dog designed and manufactured by Sony between 1999 and 2006. Using a variety of sensory receptors is reacts to touch, sound and the environment it sees around itself; it dances, plays ball, learns from feedback, and so on. The greatest number of Aibos were sold in Japan, where owners became very attached to them and even founded Aibo clinics for broken robotic dogs, for their ‘babies’.