Forgot to mention I would never ever enter a confined space when someone has their animal inside with them because I have heard of a dog on the short leash in an elevator attacking an elderly woman who entered and just pressed the floor she wished to go to. Now that is really frightening.
Also if anything happens in the elevator like the elevator's alarm goes off any animal may freak out becuase that is a piercing loud unexpected siren blasting
I was stuck in a hospital elevator for 1/2 hour and got hurt when it unexpectedly came full force down to the lobby from a high floor.
I also never enter any elevator if a person in a wheelchair is present and there are many tower building elevators that are huge and can accomodate wheelchairs and people standing, butt no thanks!
Lastly elevators have been known to do unpredictable frightening things like dropping down very fast to the lobby floor, and if you are in a high rise elevator the speed and force when you land could break your bones.