Bringing home a new puppy in a couple of weeks, house breaking and crate training are first on the list, but at some point I want to introduce an outdoor kennel. The dog will live in the house with us, but occasionally when we have a lot of kids visiting or need to go somewhere without the dog for a few hours we would like to leave the dog in a kennel. The kennel consists of a sizeable bedroom in our guest house with doggy door access to an outdoor run facing the forest and sheltered from the elements. How old should the dog be before we start getting it used to being in there? Would you use the same approach as with crate training?