![]() ![]() They also looked at 20 years-worth of data from the wolf population residing in Yellowstone National Park as it is known to have been hit by three major outbreaks of CDV in 1999, 2005, and 2008.Yellowstone National Park’s Northern Range is arguably the best place in North America to see wolves, including black wolves, which are scarcer in most other populations. To test this theory, the researchers analysed data from 12 wolf populations across North America for the presence of CDV antibodies. The number of breeding pairs in the park also declined from 10 to six. That population dipped from 77 to 68 animals, off 11 percent from the previous year. The decline in the wolf population in the interior of the park was smaller. The wolf population there dropped 40 percent, from 94 to 56 wolves. ![]()
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