This last Friday night I picked up a fare in Oakland going to SF. The couple got on with a small dog. Now I don't mind if the dog is in a pet carrier as long as they don't shed on my seats. They didn't have one so I was going to refuse the fare but he was insistent and said he was a service dog. The guy wasn't blind so it may have been used to keep him calm. I should have asked him for some sort of ID that showed it was a service dog but I just said OK and let him take his dog. Does anyone know if service dogs have ID in case I run across this again. I'm thinking he just uses that line so driver let him take his dog in the car.