Photo by: Thinkstock
Sheep
Despite their massive curling horns, Bighorn sheep aren't safe from extinction. One of the three sheep subspecies, the Sierra Nevada Bighorn sheep , is currently listed as endangered. In the early 1900s, as many as 2 million Bighorn sheep could be found in California and other regions of the U.S. Now fewer than 70,000 live in those areas.
Photo by: Thinkstock
Sheep
Despite their massive curling horns, Bighorn sheep aren't safe from extinction. One of the three sheep subspecies, the Sierra Nevada Bighorn sheep , is currently listed as endangered. In the early 1900s, as many as 2 million Bighorn sheep could be found in California and other regions of the U.S. Now fewer than 70,000 live in those areas.