Striped skunk

The striped skunk (Mephitis mephitis) is a skunk of the genus Mephitis that occurs across much of North America, including southern Canada, the United States, and northern Mexico. It is currently listed as least concern by the IUCN on account of its wide range and ability to adapt to human-modified environments. Striped skunks are polygamous omnivores with few natural predators, save for birds of prey. Like all skunks, they possess highly developed musk-filled scent glands to ward off predators. They have a long history of association with humans, having been trapped and captively bred for their fur and kept as pets. The striped skunk is one of the most recognizable of North America's animals, and is a popular figure in cartoons and children's books. The striped skunk was first formally named by Johann Christian Daniel von Schreber as Viverra mephitis. The type locality is in eastern Canada. The earliest fossil finds attributable to Mephitis were found in the Broadwater site in Nebraska, dating back to the early Pleistocene less than 1.8 million years ago. By the late Pleistocene (70,000–14,500 years ago), the striped skunk was widely distributed throughout the southern United States, and it expanded northwards and westwards by the Holocene (10,000–4,500 years ago) following the retreat of the Wisconsin glacier. Phylogenetic analyses of the species' cytochrome b gene and microsatellite data in 2012 indicated that there are four phylogroups of striped skunk. The first emerged from the Texas-Mexico region during the Rancholabrean before the Illinoian glaciation and colonized the southeastern United States. The second, still originating in the Texas-Mexico region, expanded westwards to the Rocky Mountains during the Illinoian glacial period. Two subsequent subclades were formed during the Sangamonian interglacial on either side of the Sierra Nevada. The subclade that colonized the Great Basin later expanded eastwards across the northern Rocky Mountains during the Holocene, recolonising the Great Plains and making contact with the southern phylogroup.