Does the vest and belt-harness come with the dog or would that be something we would need to purchase?

Everything is included.

Also, if you don't happen to have a crate, bed, dishes, bones, toys, and such, we'll send those, too. We'll even give you a big bag of the same grain-free dog food of the same brand the dog has been eating. If you ever want to switch food brands, use a different bed, etc., you always can, but it's nice to make the transition of the the dog’s beginning their life with you as smooth and easy as possible.