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Using long-term data on red wolf individuals of known pedigree, it was found that inbreeding among first-degree relatives was rare. A likely mechanism for avoidance of inbreeding is independent dispersal trajectories from the natal pack. Many of the young wolves spend time alone or in small non-breeding packs composed of unrelated individuals. The union of two unrelated individuals in a new home range is the predominant pattern of breeding pair formation. Inbreeding is avoided because it results in progeny with reduced fitness (inbreeding depression) that is predominantly caused by the homozygous expression of recessive deleterious alleles.

Prior to its extinction in the wild, the red wolf’s diet consisted of rabbits, rodents, and nutria (an introduced species). In contrast, the red wolves from the restored population rely on white-tailed deer, raccoon, nutria and rabbits. White-tailed deer were largely absent from the last wild refuge of red wolves on the Gulf Coast between Texas and Louisiana (where specimens were trapped from the last wild population for captive breeding), which likely accounts for the discrepancy in their dietary habits listed here. Historical accounts of wolves in the southeast by early explorers such as William Hilton, who sailed along the Cape Fear River in what is now North Carolina in 1644, also note that they ate deer.
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Wolf
The English “wolf” stems from the Old English wulf, which is itself thought to be derived from the Proto-Germanic *wulfaz. The Proto-Indo-European root *wĺ̥kʷos may also be the source of the Latin word for the animal lupus (*lúkʷos). The name “gray wolf” refers to the grayish colour of the species.

Since pre-Christian times, Germanic peoples such as the Anglo-Saxons took on wulf as a prefix or suffix in their names. Examples include Wulfhere (“Wolf Army”, or “He whose army is the wolf”), Cynewulf (“Royal Wolf”), Cēnwulf (“Bold Wolf”), Wulfheard (“Wolf-hard”), Earnwulf (“Eagle Wolf”), Wulfstān (“Wolf Stone”) Æðelwulf (“Noble Wolf”), Wolfhroc (“Wolf-Frock”), Wolfhetan (“Wolf Hide”), Isangrim (“Gray Mask”), Scrutolf (“Garb Wolf”), Wolfgang (“Wolf Gait”) and Wolfdregil (“Wolf Runner”).

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