All of our dogs have had multiple names. Cindy- AKA the Dowager Duchess of Dog; Missy AKA Miss-Miss or Big Dog; Mariah AKA Little Dog, Puppy-butt or Baby Dog; Beanie(a rescued registered Lab)AKA Miss Beans, Baby Beans, Beanie Baby or Pretty Girl; and Harley (another rescued purebread Lab)AKA Harley-Man, Big Guy or Harlford. They answer/answered to all the names with the exception of Harley. He's deaf. We can't figure out hand signals for all his names.
The only one we got to name was Mariah, everyone else can with their name and we didn't change them.