Playing behaviour in Japanese macaca 1

Playing behaviour of Japanese macaca 4

Playing behaviour of Japanese macaca 3

Playing behaviour of Japanese macaca 2

Leapfrog in Japanese monkeys

Japanese monkeys playing with a block of snow

"Leapfrog" play among Japanese macaques

Japanese monkeys playing with a block of snow 2

Playing in a household cat

"Producing" the tool for social play in Japanese macaques

Homo-sexual behaviour in a dolphin 1

[Children Playing in the River]

[Children Playing in the Snow]

Playing Birds

Playing Sugoroku in the Third Month

Children Playing in the Water

Children Playing in the Water

Playing with Goldfish

Mating in the Japanese rice-fish (1)

Playing in a Dream

Children Playing in Summer and Winter

Children Playing with Silhouette Pictures

[Playing in the Snow]

[Playing in the Snow]

[Children Playing with Ice]