I'm a little confused why you guys are all calling down the dog owner. There have been several comments alluding to the owner doing this on purpose, which is just stupid. Wild animals roam, and our dogs are frequently outside. The problem here is that dogs are a) curious b) temperamental. Some dogs are smart enough to get the hell out after the porcupine gives them a wack, but many get mad. They get convinced they're going to kill it, and the results are predictable as they get madder and madder. I'm pretty certain that the pit bull falls into this category. Growing up on a farm, I've seen 2 of our dogs get this treatment. Both german shepherds, and fortunately one only got about a dozen quills, the other maybe 30. As far as stopping to take a couple pictures, I see nothing wrong with that. It's quite a spectacle, and a good lesson for all observing. It's not like the 2 minutes to take the photo is going to make any difference in the 2-3 hour long job ahead, which probably involves novacain and a pair of pliers. Although with this severe, the dog should probably be put under for the procedure. With our dog, dad jerked a couple quills, the dog tried to bite him, so he ****ped it on the nose with the pliers, and it sat still for the remainder of the procedure.
In short, it's not a fun thing and is terrible for the dog, but there's no reason to be bashing the owners on this. It's an accident. It's why we shoot porcupines when we find them near our homes.