Do you walk them all winter? I live in the Northeast so it is very cool here in the late fall and winter. I am not sure if I should be taking him out for his usual 1/2 hour walk (twice daily). Maybe shorten it? It is the highlight of our morning so I would hate to cut it out. I guess I could see if he still WANTs to got out then. He may think its too cold! So what do you do??