Oh man I was so glad to read your update... and that picture is so cute, we all love that sweet Tatum face.
My big dog, Kalaya, had hip surgery and the first fall/winter was rough, she also acted funny and it took us a while to figure out that it was because as the weather go colder so did the pins, and joints. I don't let her walk as much on cold days and give her extra lovin
Poor little Tate, hugs to both of you