US Department of the Interior @Interior
"Are you having trouble losing those extra holiday pounds? Ask your doctor if hibernation is right for you." During hibernation, a bear can lose up to 1/3 of it's body weight without losing much muscle or bone density. Video courtesy Trent Sizemore #Wyoming @YellowstoneNPS https://t.co/pWz1l9kSpE — PolitiTweet.org