I work at PetSmart (can't stand it) and that is life. Cashiers aren't always paying attention, depending on the time they are either swamped with customers, stocking treats, cleaning, etc. That also goes for everyone else that is working. Though the dog should have been escorted out or given a leash.
Yikes!! What a moron!! What if that dog had gotten loose? And attacked another animal or a person? Could Petsmart also be at blame, since they didn't enforce the leash policy? So thankful our local Petsmart isn't that way. There's rarely any dogs in the one we go to, which is kind of weird. The fish dept is always slammed, but only a handful of times have I ever encountered another dog in there. Oh well, more treats and lovin for Peyton!