Stock photography, photos: Large Docile Northern Leopard Frog Stock photos of A large docile northern leopard frog (Rana pipiens) sits on a trail, Bluestem Prairie SNA, Minnesota. Photograph: © Matthew Thalman Click for a larger image and more information Keywords associated with this stock photo: amphibian, animal, creature, frog, Leopard Frog, Northern Leopard Frog, Rana pipiens, True Frog, wildlife, zoology, America, Bluestem Prairie, Bluestem Prairie SNA, Minnesota, North America, Scientific & Natural Area, Scientific & Natural Areas, United States, United States of America, US, USA