A report on the taxonomic status and distribution of the red wolf.
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Comparison of 213 skulls of Canis rufus with 214 C. lupus and 336 C. latrans indicates that the red wolf is a distinct species. Apparently extensive habitat modification and decline of the red wolf population, both attributable to man, led to the breakdown of isolation and the formation of a hybrid swarm. By 1969, the swarm had spread throughout most of eastern Texas and had moved into Louisiana. Pure red wolves continued to survive only in a limited area along the Gulf Coast from Brazoria County (east of the Brazos River) east to Chambers and Orange Counties, Texas and in Cameron Parish.