This pic is real. A polar bear came for multiple days to play with the dogs of a sled team. When the bear first arrived the owner of the dogs thought they were goners. Never once did the bear harm the dogs.
We had a hen who did this also. From the time the kittens were born, she would sit on them and keep them warm while the mother was out hunting, and then they'd trade places while the hen ate so the cat could feed her kittens.