Neat question!

I've had/have:
7 Cats
5 Turtles
5 Bunnies
2 Dogs
2 Hamsters
1 Siamese Fighting Fish

Plus numerous goldfish, tadpoles, frogs...

The bunnies were a nest abandoned by their mommy in a field by our house. We raised them till they were bigger and then re-released them. The turtles were a nest of Painted Turtles laid by our driveway. We watched over the nest and raised the babies in an aquarium till they were big enough to be released.