American bullfrog

Description:

Closely resemble the green frog but lack dorsal ridges. They are the largest frogs in North America. They are are opportunistic feeders, eating virtually any moving prey large enough to be noticed and small enough to be swallowed. Large prey items include other frogs, fish, reptiles, snakes, small turtles, and even birds and mammals. Females may lay up to 12,000 eggs, deposited as a surface in mass. The tadpoles may grow to nearly 6 inches in length. The metamorphosis takes about 2-3 months in more southern regions and up to a 3 years in northern regions.

Habitat:

Across North America, living in ponds, lakes, swamps and often resting at the water's edge.

Notes:

I believe the first three photos are of a male and the "headlights" fourth photo of a female.