It was so weird one time. I always build a new animal exhibit with a wall sharing with another animal's exhibit to save money. Well, I connected a tiger exhibit to an African Warthog exhibit. The warthog exhibit had low walls because the piggies don't jump. Well tigers apparently do. I thought it would be OK because I had water where the exhibit fences were connecting, but I guess not. Long story short, all 15 piggies died a gruesome death, as well as the itty bitty baby piggies. Dead.
So then I quit without saving and tried agian. I fixed the fence that was shared between african warthog exhibit and the tiger exhibit. But I forgot the other fences, so the tigers were terrorizing the zoo.
Aggrivated now, I quit yet again and tried yet again. There was a tank of water adjacent to the tiger's regular exhibit for them to swim in. Apparently, not only could the tigers go from tank to exhibit, they could also go from tank to zoo. So they climbed out of the swimming tank and started terrorizing the zoo yet again.
All in all, yeah it was pretty fun