My flight took a late the other day because some idiot got on the plane with a dog not in a carrier, claiming it was a service dog. The dog's behavior obviously proved it wasn't, right up to biting the agent who was trying to get a wheelchair customer into their seat.

The Captain threw the dog, it's owner, and the rest of the party off the plane. I can't believe how stupid some people are. What really ticks me off is that jerks like this make it more difficult with those who have a legitimate service dog.