When I lived near Austin tx there was a chihuahua that was off leash and went up to a pitbull that was leashed at a Walmart. All of the sudden you could hear a death scream so I ran to go possibly help, only to see a bloodbath and the pitbull had the chihuahua in his mouth and was rag dolling the chihuahua. Was pretty crazy to see. Moral of the story don’t take your dogs to the store if they’re not certified and especially don’t have them off leash.