Your new beagle was standing there on his hind legs. "Here are your ownership papers...keep them in a safe place. And here is your ID. Thank you for shopping at Reverse World."
As soon as the beagle took the ID and papers from the worker, the dog's expression grew serious. "C'mon boy," he said, "Let's get you home."
You looked around the department...all of the dogs you had looked over since you entered were standing on their hind legs...many of them tending to the human workers who had gotten down on all fours.
There had been many more dogs around than humans, and the ones not tending to the humans seemed to be shopping for them. You spotted the clerk who had drawn up your papers being petted by two puppies.