As any animals ever escaped from the zoo?

Yes. All quickly recaptured. Other than any small birds. 3 large cats. 5 orangutans. 1 gorilla. Probably a few birds.

Just my uncle

No

The red panda twins (who have recently moved to new zoos to be with their mate once escaped as well- they were recaptured safe and sound, though the keeper did get a few scratches. You can read about any unusual happenings on the zoos blog!

Yes peacocks and some cats like foxes and a few others

I heard a bird once flew out of exhibit