Animals can be really funny. Once, in a Brooklyn zoo, a cat accidentally wandered into the yak cage. There were two yaks in residence. I never saw a yak do anything but stand around. They can weigh over 2000 lbs. One of them, when it saw the cat in it's domain, went berserk and chased the cat all over this large, fenced-in area, mostly around the fenced perimeter. Finally, after five or so minutes, the unfortunate feline found an escape through a hole in the fence, or bars, and squeezed through to safety. The yak that had done all of the chasing then charged over to the other one, and started angrily butting it's head against him (or her), as if to say, "Why the hell didn't you help?"

Another time there was a hippopotamus that took a leak for what seemed like an hour. It was coming out like a fire hydrant had been opened. A large crowd had gathered to watch the spectacle. When the beast finished, there was loud, enthusiastic clapping and cheering from the audience.