Temperate Zone Mammals Exhibit, Hall of Mammals, National Museum of Natural History, by Unknown, 1959, Smithsonian Archives - History Div, Exhibit case displays examples of the adaptation of temperate zone mammals to the climate by the use of hibernation or aestivation. The case includes a deer, a ground squirrel, a fox squirrel, and a jumping mouse. The exhibit is in the Hall of Mammals, National Museum of Natural History..