A pair of Sumatran tiger cubs and a set of young orang-utans, all abandoned at birth, have become inseparable after sharing a room at an Indonesian zoo.
The four have lived side by side for a month without a hitch, although this goes against their natural instincts.
"This is unusual and would never happen in the wild," zookeeper Sri Suwarni said. "Like human babies, they only want to play."
But the friendship is not destined to last as tigers start eating meat when they are three months old and will need to be separated from their new playmates.