My 11 year old sheperd has her hip and back shaved from surgery to remove two large sebacious cysts. She is an outdoor dog, who has recently decided she can't stand being inside the insulated garage - she tears everything up and paws at concrete floor. Due to the surgery she is wearing the lamp sshade collar to prevent her from chewing the wounds. Stiched have been removed but she keeps chewing the spots if I remove the collar. With the collar on she can't move or get turned around in her crate - so the crate is out. Right now she is staying on the screened in porch, which she enjoys but I'm concerned about the cold on the shaved spots. How long will it take for her hair to grow back and how cold is too cold.