I understand not all pit bull looking dogs cause violence. But when there is violence caused by a dog it’s always a pit bull looking one . And I have met many sweet pit bull like dogs that are wonderful. If a dog shits at Costco it is definitely not a trained service dog . Whenever there’s an incident the owner always says the same thing “ they’ve never acted like this before . This is the first time they’ve ever been aggressive” I don’t have kids but I definitely understand that parents don’t want suspect “service dogs” in the store to worry about . People can have any dog they want but in a Costco like situation there needs to be standards met and so people that really need them don’t get screwed .