A whole-genome analysis suggests that polar bear numbers waxed and waned with climate change, and that the animals may have interbred with brown bears since becoming a distinct species millions of years ago.
If you've ever been elbowed out of the way at the dinner table by older, stronger siblings, you'll identify with wolves competing with larger bears for food. A study by Utah State University ecologist Aimee Tallian and colleagues ...
After nearing extinction in Europe in the early 20th century because of hunting and shrinking habitats, large carnivores like the gray wolf, brown bear, lynx and wolverine are thriving once more.
A comparison of the genomes of polar bears and brown bears reveals that the polar bear is a much younger species than previously believed, having diverged from brown bears less than 500,000 years ago.
(Phys.org) —In the winter, brown and black bears go into hibernation to conserve energy and keep warm.