Biography
The genus Spilogale includes all skunks commonly known as spotted skunks. Currently, there are four accepted extant species: S. gracilis, S. putorius, S. pygmaea, and S. angustifrons. New research, however, proposes that there may be up to seven. The western spotted skunk (Spilogale gracilis) can be found west of the Continental Divide from southern British Columbia to Central America, as well as in some parts of Montana, North Dakota, Wyoming, Colorado, and western Texas. Eastward, its range borders that of the eastern spotted skunk (Spilogale putorius). Spilogale gracilis generally occupies lowland areas but they are sometimes found at higher elevations (2600 m). Although the western spotted skunk is now recognized as S. gracilis, previously, skunks west of the Cascade Crest in British Columbia, Washington, and Oregon were recognized as a distinct subspecies (S. p. latifrons). Spilogale putorius is found throughout the central and southeastern United States, as well as northeastern Mexico. In Mississippi, S. putorius is found throughout the whole state, except for the northwestern corner by the Mississippi River. In the Great Plains, there has been an observed increase in the geographical range of these skunks, and the cause of this is thought to be a result of an increase in agriculture. This would lead to an increase in mice, which happen to be one of the primary prey for S. putorius.
Spilogale usually like to reside in covered thickets, woods, riparian hardwood, shrubbery, and areas that are located near streams. However, S. putorius usually enjoy staying in rocky and woody habitats that have copious amounts of vegetation. These sly creatures prefer to dwell in a den or natural cavities such as stumps or hollow logs. Spilogale begin to mate during March. Implantation occurs approximately 14–16 days after mating. For the western spotted skunk, most copulations occur in late September and the beginning of October. After implantation, gestation lasts 30 days and between April and June their offspring are born. Spotted skunks protect themselves by spraying a strong and unpleasant scent. Two glands on the sides of the anus release the odorous oil through nipples. When threatened, the skunk turns its body into a U-shape with the head and anus facing the attacker. Skunks are omnivorous and will eat small rodents, fruits, berries, birds, eggs, insects and larvae, lizards, snakes, and carrion. Spotted skunks can live 10 years in captivity, but in the wild, about half the skunks die after 1 or 2 years.
During the 1940s, Spilogale populations seemingly crashed and the species is currently listed by various state agencies as endangered, threatened, or ‘of concern’ across much of its range. The species S. pygmaea is endemic to the Mexican Pacific coast and is currently threatened.