Cory Williams, at the University of Alaska Fairbanks, says, “A huge variety of mammals (哺乳动物) hibernate. However, hibernation in bears is different from that in small mammals…their body temperature only drops a few degrees and they don’t experience periodic rewarming.” In general, mamm...
Getting fat for winter阿拉斯加胖熊争霸赛It's that time of year when the air gets a little colder,the days get a little shorter, and the bears get much, muchfatter.Every year at this time, Alaska's Katmai NationalPark will hold a competition for bears. They will look forthe fattest bear...
It's that time of year when the air gets a little colder, the days get a little shorter,and the bears get much,much fatter. Every year at this time, Alaska's Katmai National Park will hold a competition for bears. They will look for the fattest bear in the park. Online voters(网...