Paiute (upper cougar) was wandering around the exhibit and climbed up the log for a better vantage point. Then Chinook decided she also wanted to climb the log to get a better look, probably at the farm, or the little children running around the zoo. This left Paiute stuck. So he made the best of it and turned Chinook's tail into a toy.
It took her a minute to turn around and give him a good swat on the face. Unfortunately for picture sake, she turned away from the viewing area, so no snarling pictures. Still a cute moment.
Also overheard that the zoo has plans to breed these two since they're compatible. And one of the head North America keeper holds the cougar studbook. There are also zoos around the country that have space for new cougars, so any cougars born will have homes to go to.
Paiute (higher cougar) Chinook (lower cougar)
Taken at the Oregon Zoo in Portland