Bullfrog is native to the east of the Rocky Mountains in North America. It can survive and breed in small lakes and permanent ponds with warm climate, shallow waters with aquatic plants and sediments, and swamps, lakes, puddles, rivers, rice fields and still waters with lush aquatic plants along the coast.

Bullfrog preys on invertebrates such as insects, shrimps and crabs, as well as small vertebrates such as small fish, frogs, tadpoles, salamanders, young turtles, snakes and rats, and eats a lot. The tadpoles of bullfrog mainly feed on plankton, algae, rotifers and larvae of various insects, mosses and aquatic plants in the natural environment.

So bullfrogs also eat mosquitoes. But unlike frogs, frogs mainly feed on insects such as mosquitoes, while bullfrogs are much larger in size and food intake than frogs, so small insects such as mosquitoes are just one of their foods, not the staple food.