@ossobuco,
We're in agreement on this one, osso.
There's a big difference between putting clothing on a dog (coats, sweaters, boots), which is generally done to protect the dog from the elements, and what these groomers are doing. There's a big difference between putting reindeer antlers, or a santa hat, or a birthday party hat, on a dog for a photo op or for a few minutes of family amusement. Such costumes are removable and are not generally worn by the dog for more than a few minutes. They aren't distorting the dog's appearance for months at a time, until the "artwork" grows out. And the owners who briefly costume their pets this way, generally think it looks cute, they aren't doing it to publicly ridicule the dog.
I don't have a real problem with Wegman. He's not actually doing something to alter the dog's body, or hurt the dog, he's mainly just having it stand or sit long enough for him to get his shot. There is some artistic merit to his photos, and he plays on our tendency to get anthropomorphic about dogs. And many of his photos actually reveal the beauty of the dog.
Even in shots like this one, I don't feel Wegman is ridiculing the dog.
That dog is just standing or sitting behind some props. And I think it's a clever creative concept that really isn't grossly misusing the dog. It's a visual image of the unexpected, and that's what art is about. The dogs in Wegman's photos are only one part of the total composition. And, once Wegman gets his shot, the dog is just as he was before.
Humans do exploit dogs all the time--in circuses, films, commercials, art, photos, etc,. And some might well argue against the use of dogs in all those venues, although most of them also reveal the talent and aptitude of dogs.
But what these crazy groomers are doing to their dogs, is a whole different ballgame.