If there is an animal I like and I do not want to risk getting it, I will buy it ASAP, or pay and have/ask them to hold it for pick up when I am leaving.
I try not to take the animals around, just to minimize the health risks... I am anal like that.
At least this way if I pick it up and disinfect myself at the end of the show, I know it has only been at one booth (unless it was traded at the start of the show -but I always ask).
bruce