That has been circulated over two years according to my wife, though I have never seen it before. That bear reminds me of our dog the way he's sort of "rolling" on the sled dogs (one of my dogs does this to my 10 year old nephew when he comes and visits) I'm not sure what causes this extreme attention, but it's great to see.
WOW! I am stunned by these images. I'm only finally seeing them now, they're excellent. That must have been one lonely polar bear. Or maybe he was acting on behalf of all his brothers and sisters, doing sort of a political tap dance to gain public support for their cause.