I have come to despise the couple with the little snorting dog. They are the ones that will stand at the counter for 20 minutes, waiting for one of us to feed their stupid pet, no matter how busy we are with other customers. If we don't feed him, they will talk to us through the dog. "I guess she's too busy to give you a treat, Little Dog. We'll have to try again later." Then they pull the tiny beast away.
At first I only hated the owners for encouraging the dog's behavior. But now I hate the dog too. He salivates at the sight of anyone in an apron and strains himself against his leash to get to the counter faster. I would never wish harm on him, but if I heard that he died peacefully in his sleep, I would think "Meh."
Though I have to admit, the situation has gotten better for me since I told them I was allergic to dogs . . .