This needs to be a poll π. I think right because the legs close to the head are arms and made for sweater wearing...a dog in pants is just silly ππ€
The front legs get a shirt and the back legs get pants, and then there are gloves and shoes that are distinctly styled. And then they typically wear a cape. I've known a dapper dog or two so I've gotten to know the culture.
Well my humans want to make me wear some sort of chastity belt, because I'm on heat at the moment. To wear it on all four legs would make no sense at all. It's my foofla that needs to be protected, not my chest. And besides, how would you stop the pants on the left from falling off?