I worked for 42 years with the Forestry Service and I did have opportunity to see grizzlies play with wolves, black bears play with cats, a large mountain lion pickup and move a warren of young rabbits who were freezing to death and also one night at my residnece I saw a mountain lion mother with cubs at my door. It was bitterly cold and she looked like she was asking for help. I opened the door, they came in and laid down in front of the wood stove and i went a got a heavy comforter and placed in on the wood floor. they all moved to it. I had to feed the fire twice bvefore I turned in and I thought about a tool room I had connected to the cabin. I opend the door and turned on the light and then went upstairs. In the morning the mother had moved the cubs and the comforter on the floor into that room. I had to go to work and I did leave a metal baking pan out on the floor with venision on it. When I returned at noon and opened the door I could tell she was ready to go so I left the door ajar and she took them and left. Two nights later she was back. I later found out the temps. had set a new low record for the area and the snow crust had frozen and she just had all she could do to keep her young warm and protected and little time if any to find decent shelter. The following summer I came home from a fire and she was asleep on the porch and the young were in the adjacent meadow. I just left her and the family alone and they never seemed to feel threatened either. This was above the Swan Valley in Montana. I think animals are much more tuned into to humans and other animals than we give them credit for. This is unusual but not unheard of.