EUGENE, Ore., Aug. 3 (UPI) -- A new study has identified the driving force behind the worsening plight of large predators -- the loss of prey species around the world.
In 2014, researchers at Oregon State University found 24 of the planet's 31 largest carnivores -- including bears, cougars, dingoes, lions, lynxes, sea otters and wolves -- are in decline.