In this photo taken on Friday, June 29, 2012, Siberian tiger cub Clyopa plays with cat Masyanya in the house of Yekaterina Khodakova, whose Shar Pei dog Cleopatra is breastfeeding Clyopa and her sibling Plyusha in the Black Sea resort of Sochi. The cubs were born in late May in a small zoo at the Oktryabsky resport in Sochi, but their mother refused to feed them. Fewer than 400 Siberian tigers have survived in the wild, most of them in the cedar forests of Russia's Far East. (AP Photo/Igor Yakunin)
Unusual (and extremely adorable) friendships formed in the animal kingdom.