It's f'in disgusting. If you welcome a pet into your home, it becomes family. And in this case, if you had removed the photograph and not told us it was a pet dog, the b@stard might as well have been talking about his own child. *edit* Just realized I forgot to answer the question. Yes, I think they should be fined, and if the pet is found hurt or heaven forbid dead, then the owner should face penalties other than just fines.*
If you can't love and take care of your family, you shouldn't have one. Full stop.
Reminds me. It's been a year or two. I should probably go meet my parents at the nursing home.