LOL! But a very true, common sense observation.
Here's confirmation: DOGS ARE LOW-TECH LYNCHPIN
But, when I checked in, I wasn't asked for ID (asked twice on my return trip). At the time I was very much aware of it, but odd how meaningless and seemingly unimportant this was at the time. Was also in Manhattan on 8Sep, ret'd home on 9Sep.
Safely home on 11Sep, although in shock, I had of feeling of relief that everything was behind me, but felt I'd never again want to fly. Time will tell, but I tend to think I will be in the air again, just when is the question.
These dogs are heroes, and love their jobs. Some years ago, I saw a beagle drug-sniffer who found "something", and the little fellow seemed happier than if given a piece of prime beef; after a pat on the head, he went on to the next pieces of luggage.