> Legally an actual service animal must be trained

There's a distinction between trained service animals and emotional support animals. Both are support animals but the latter are largely untrained which is why airlines have moved to ban them. I have no issue whatsoever with trained service animals!

I think there's a conversation to be had about dogs as vicious in nature but I have been laughed out of the room when I mention this to an in-person audience. But many USPS/UPS/FedEx and now Amazon delivery people are aware of this: untrained dogs are a danger