Agassiz National Wildlife Refuge is located in northwest Minnesota. Packs of wolves, moose, waterfowl, and 294 species of birds make this refuge a wildlife wonderland. 49 mammal, 12 amphibian, and 9 reptile species have also been identified. The refuge, originally named Mud Lake Migratory Waterfowl Refuge, was established in 1937 primarily for waterfowl production and maintenance.