Our frogs and bullfrogs often look very much alike. They both have thin, moist, smooth skin, long, powerful back legs and webbed feet. They both can be various shades of green or brown and have dark spots and stripes across their legs. Our toads are easier to identify.
This is a Northern Green Frog. It has prominent folds of skin called dorsolateral ridges that extend along both sides of the back in a straight line from just behind the eye almost to the rear legs.
This is a North American Bullfrog. It also has ridges of skin, but they begin at the eye and curve around the eardrum, ending at the front leg. It does not have the straight dorsolateral ridges along its back.
This is an Eastern American Toad. It has thick, dry, bumpy skin, a stubby body, and shorter back legs with individual toes. It has large swellings called partoid glands behind the eyes and raised ridges called cranial crests on the back of the head. It does not have dorsolateral ridges.