Imponderables

I was on a flight last evening across the aisle from a woman who was transporting her little Lhasa Apso as a carry on. I wonder...when you bring an animal on board as a carry on, does it have to go through the metal detector or the x-ray machine? Hmmmmmmm...at one point I was considering bringing Roxy with me cross-country---this was when she was a mere pup, of course--but the airline said that I would have to have documentation from my vet authorizing her air travel AND tranquilizers---no way was I going to do that. In light of last night's flight with the yippy little dog who started barking as soon as we were starting our descent, I am glad that I never brought Rox onboard.