Our dog is named Molly. Her nicknames are: Git, No, Down, Molly-Mo-Molly, Queen Molly of her Holy Realm of All The Earth, and Dippitty-Doo and she answers to all of them

Our cat is named Bruce. His nicknames are: Batman, Batcat, Rat Bastard, His Royal Highness, Saint Bruce; and Saint Bruce Frankfurt the Third, Esquire. He answers to none of them. He does answer to cans opening, so maybe the problem is a language barrier…