In the wild, they feed upon fish, rodents, birds, other reptiles, insects and many other things. A suitable diet for a young caiman would include earthworms, goldfish and young mice of appropriate size. Young caimans should be fed no less than twice a week. Larger caimans should be offered rats and very large specimens will accept chickens and rabbits. Earthworms can be obtained from bait shops or your back yard after a rain.
Worms come out at night and can be obtained with use of a flashlight and a quick hand.
Goldfish are stocked at most pet shops along with mice. If irregularities in behaviour occur such as improper shedding, difficulties in movement, loss of appetite, vomiting, or just plain apathy, contact the Ontario Herpetological Society.