Thanks for stopping by @curatorcat. One time Red was by the open door when I was feeding the squirrel. Red made a wild dash for the squirrel but luckily the squirrel escaped and ran up the apple tree with Red in hot pursuit. When Red got to the apple tree he stopped as he was up to his neck in snow and didn’t like the feeling. I went to get him and carried him back to the house. He hasn’t tried that again.