This isn't intended to be a shirt for dogs, but you never know if newly intelligent and self-aware dogs will want to continue to run around naked with their privates hanging out, so let's just leave it up to them. Whoever wears this will love the 100% combed, ring-spun cotton, and the tear-away label to keep the back itches away.
These shirts tend to run a little on the big side, which will either leave you room to grow or you can pick a size down if needed.