My mom calls her "puppy of the world" and she gets so excited and wags her tail, and barks. I call her "spedpup" because she is so stupid at times. When she I come home from school she usually runs into the front door by accident and then a second later starts running and barking, yet she is such a little sped pup. My dad calls her "hop-a-long" because when she gets up after laying down for awhile, she limps a little from her arthritis but she gets better after about 5 minutes. Yes, she responds to all her nicknames.