My Scottie boy is 8 and is still "Puppy Mac." Got him as a pup. Funny thing is that our female rescue came to us as an adult. We don't call her "puppy." But she is the princess.
We called our first baby our puppy until she died at 13. Boy do I miss her. We got a new puppy now 8 months and wow I forgot what it was like to have a puppy.