Grizzly bears, for example, are a subspecies of brown bear found in parts of North America. There are many different ...

Hibernation is a fascinating survival strategy used by certain animals to endure harsh environmental conditions, primarily ...

Despite decades of research, scientists admit that they still have a lot to learn about sleep. In general, sleep can be ...

Studying how these distant primate relatives slow aging during hibernation may reveal new strategies for supporting healthy ...

One of the great marvels of nature is how bears, the largest carnivore in North America, are able to hibernate all winter, ...

The ends of chromosomes, called telomeres, typically shorten as an organism ages. But when some fat-tail dwarf lemurs ...

Black bear mating season takes place during the summer, but embryos do not begin to develop until the mother bear enters her ...

An international animal welfare group announced the start of March Napness, a March Madness-style bracket tournament tracking ...

The first bears of 2025 have been spotted in Yellowstone and Grand Teton national parks. Adult males, called boars, are emerging from their dens this month, with females and juvenile bears expected to ...