Who could have thought that along with the Polar Bears there was one more creature who walked on the same areas as them? In the north, people who live there have a different relationship with the polar bears to those who have just seen them in pictures. When the Arctic Circle gets warmer, polar bears move out in the land where they spend most of their time. And this puts them near to humans. Maybe this was the same reason this new unknown creature came out that day to meet David.