Gray whales that migrate along the West Coast of North America continued to decline in number over the last 2 years, according to a new assessment. The population is now down 38 percent from its peak ...

FILE - This April 18, 2008, file photo provided by the U.S. Fish and Wildlife Service shows a gray wolf. A new population tally of gray wolves in the U.S. Northern Rockies shows their continued ...

Add Yahoo as a preferred source to see more of our stories on Google. The number of gray whales migrating along the California coast has plummeted again this year, dropping to levels not seen since ...

For the first time since efforts began to reintroduce the species into the wild, the number of Mexican gray wolves in Arizona and New Mexico has surpassed 200, with at least 241 wild wolves documented ...