Aestivation also aestivate. Although relatively uncommon, a small number of mammals aestivate. Animal physiologist Kathrin Dausmann of Philipps University of Marburg, Germany, and coworkers presented evidence in a 2004 edition of "Nature" that the Malagasy fat-tailed dwarf lemur hibernates or aestivates in a small tree hole for seven months of the year. According to the Oakland Zoo in California, East African hedgehogs are thought to aestivate during the dry season. Aestivation Aestivation or æstivation (from , summer, but also spelled estivation in American English) is a state of animal dormancy, similar to hibernation, characterized by inactivity and a lowered metabolic rate,
Politics of the Arizona Borderlands is on foot through the Sonoran Desert. The trek takes upwards of three days and immigrants face a host of issues while making it. Near the border, temperatures rise into the triple digits during the daytime in the summer months and fall to near freezing during the nighttime in the winter months. Average annual precipitation varies along the border but can be as low as three inches, while rainfall during the North American Monsoon season can be surprising and deadly (resulting in the passing of the Stupid Motorist Law, for example). Immigrants attempting to cross the border frequently die making