northern leopard frog (Lithobates pipiens) Description
English: THE LEOPARD FROG [Rana pipiens Shreber]. Male (left) and female (right). Ithaca, N. Y. The Leopard Frog may be oreen or brown. It has rounded dark spots outlined with light.
Date 1906
Source Dickerson, Mary C. (1906) The Frog Book, New York: Doubleday, Page & Company https://archive.org/details/frogbooknorthame01dick
Author Mary Cynthia Dickerson (1866–1923)
Source: https://commons.wikimedia.org/wiki/File:The_Frog_Book_(1906)_Color_plate_11.jpg
The northern leopard frog (Lithobates pipiens or Rana pipiens) is a species of leopard frog from the true frog family, native to parts of Canada and United States. It is the state amphibian of Minnesota and Vermont.