evenly distributed throughout the Big Thicket. Mammals: About 54 species of mammals occur in the Big Thicket (not counting extirpated species), including such species as the Virginia opossum (Didelphis virginiana), nine-banded armadillo (Dasypus novemcinctus), short-tailed shrew (Blarina carolinensis), American beaver (Castor canadensis), Baird's pocket gopher (Geomys breviceps), southern flying squirrel (Glaucomys volans), white-tailed deer (Odocoileus virginianus), eastern spotted skunk (Spilogale putorius), American mink (Mustela vison), river otter (Lontra canadensis), coyote (Canis latrans), gray fox (Urocyon cinereoargenteus), bobcat (Lynx rufus), and Rafinesque's big-eared bat (Corynorhinus rafinesquii) a threatened species in Texas. Although many of these species are common, they can be highly secretive and are seldom seen in the dense woodlands. Many prominent species that once occurred in the Big Thicket have been extirpated from their historical ranges. Examples include hog-nosed skunks (Conepatus leuconotus), red wolves (Canis rufus), ocelots (Leopardus pardalis), and jaguars (Panthera onca). In 1902 ornithologist Harry Church Oberholser reported what he considered reliable accounts of jaguars in east Texas, including one killed south of Jasper a few years earlier, along the Neches River near Beaumont, and in the timber south of Conroe. Although once common in the Big Thicket, the American black bears (Ursus americanus) was the target of a concerted effort to extirpate them from east Texas in the late nineteenth century. Reports of field naturalists in 1902 indicated: Conroe: "A few still found in the big thicket 15 mile south of here." Beaumont: "A few still found in the forest northwest of here." Sour Lake: "Still common in the swamps near here; a few killed every year." Rockland: "Now very rare or quite extinct." Vernon Bailey, chief naturalist for the U.S. Biological Survey, interviewed a hog farmer and bear hunter named Ab Carter in 1904. Carter reported that in 1883, he and a neighbor set out to exterminate the bears in the Tarkington Prairie area of Liberty County that preyed on their free ranging hogs in the forest. That same year 182 bears were killed within a radius of Tarkington Prairie and annual hunting continued until 1900 when the last two bears were killed in that area. Currently, extremely rare bear sightings in east Texas are believed to be wandering individuals from reintroduction efforts in adjacent areas of Louisiana. They are now a threatened species in Texas and the National Park Service list them as "probably present". Conversely other species have been introduced to the area