I am going to agree with the skipper. A dogs working weight is his working weight no matter if he's in the house or on the chain. Every mammal has his peak conditioned weight. Theoretically, The only advantage of a house dog is that they have the POTENTIAL to be more intelligent because of the srtonger connections in thier brain given that they would have excercised it more due to more interaction with the owner and other family members. As a matter of fact, once you get to an animals ideal show weight, it's hard to change it even if you feed him more.