Why do leopard frogs come in two colors?, Colorado Arts and Sciences Magazine

The persistence of two colors everywhere suggests a balance of evolutionary forces

Northern Leopard Frog - Montana Field Guide

Northern Leopard Frog

Northern Leopard Frog

Northern Leopard Frog

Frogs: The Other Springtime Singers - Images

Northern Leopard Frog

Sepulveda Receives AgSeed Grant for Northern Leopard Frog Research

Northern Leopard Frog

Northern leopard frog have fewer places to sing, meet and breed tadpoles from a 6,000-egg jelly - Cambridge Day

FrogLog 98 by Amphibian Survival Alliance - Issuu

Northern Leopard Frog

Froglog 114 by Amphibian Survival Alliance - Issuu

Northern Leopard Frog (U.S. National Park Service)