A Kennel can be a great tool in helping house train your puppy. The kennel should only be big enough for your puppy to lie down and turn around; giving him/her too much room can result in the undesirable behavior of going to the bathroom in the kennel. If you have, for example a lab, and as a puppy he is too small for the kennel he/she will fit into later, kennel barriers are available or a box of books may be used to block off the kennel.