I have had:

Horses
A Macaw
A Black Headed Caike (parrot)
Iguana
Tortoise
Green Tree Python
Carpet Python
Nile monitor
Uromastix
Bearded Dragon
Albino Horned Toad
Corn Snake
Chameleons
Pirahnas
Hamster
Dogs
Cats
A Swallow (dont ask)
Indian Ornamental Spider
Fire Bellied Salamander

Im sure there are some others ive missed