Most creatures enjoy playing, as humans it’s the only thing we did as young kids, and she animals understand the concept of fun too.
At a wildlife zoo in Bali, a visitor threw over some treats to the orang-utan sitting and watching everyone walk past. The orang-utan ate the treats and then noticed the man holding his arms out, as if he was asking for something in return.
The orang-utan looked around to see what he could throw back, and found some dry peel, and threw it directly back into the man’s hands. They did this for some time, playing their own version of “catch”!