OWWW! OW! I want to see that! A reindeer Santa, flying in the sky, being pulled by humans! Way too funny!
Snow leopard is another good choice because they truly are a majestic and beautiful animal. But I think I would be absolutely terrified to wake up early Christmas night and happen to find one in my house. Or, at least I would be, untell I found out it's just furry Santa.
Polar bear and reindeer do seem to be the popular vote.
EDIT: weird linux formatting issue, re-edited.