National Geographic Travelさんのインスタグラム写真 - (National Geographic TravelInstagram)「Photo by @bertiegregory | A large male polar bear yawns during a snooze on the west coast of the Hudson Bay, Manitoba, Canada. Aside from his blue-purple tongue, the most interesting thing I noticed while looking into the mouth of this bear was the positioning of his teeth. Behind polar bears' huge canines, there’s a gap where the teeth don’t erupt out of the gum. This gap allows the canines to sink deeper into their seal prey. This offers greater grip, allowing them to catch and pull seals out of the water. Follow @bertiegregory for more wildlife adventures. #wildlife #snow #bear #teeth #polar bear」4月26日 5時05分