When the dogs first rebelled, the first place they hit was this zoo. It was small and held quite a few people. In the manic panic, the animals were set free in hopes that they would distract the dogs from their real intention.
It worked. The humans escaped while the dogs snapped at giraffes and screaming monkeys. Though that day wasn't a complete success, the zoo now belongs to them and they have free run of all the cages and stores. Some just like to sit at the enclosures and watch the fish swim back and forth...