Northern Leopard Frog pictures (Rana pipiens). I also have pictures of the Southern Leopard Frog.
The Northern Leopard Frog in these pictures was foudn in Phillipston, Massachusetts. The Northern Leopard Frogs range in size from 2 to 3.5 inches, with the largest frog on record at 4 3/8 inches. The dorsal ridges are less distinct than the Green Frog, and they have spots on their backs. They breed from March to May.