True that!! 10-12 years ago I had a table at an area gunshow selling tickets to our upcoming FONRA fund raiser. The aisles were packed and, suddenly a very loud stampede, for lack of a better description, broke loose around the table next to mine .
After things settled down a bit, I learned my "neighbor" was a dog trainer and was snake proofing dogs at the show. He kept some rattlesnakes in a couple of boxes and when someone booked him to train their dogs, he would meet them in the parking lot, turn a snake loose and train their dogs. As it turned out, he discovered one snake was missing, which precipitated the stampede. A bit later, he discovered that he had somehow miscounted.