Sylvia and Harley have a few. Sylvia's are Syl, Puglet, Puggy, or Puggy Girl usually. I'm sure there are a few more, but those are the main ones. Harley's nicknames are Shakey Butt (his whole butt shakes when he's excited), Snarley, Snarley Harley (sounds like a garbage pal kids doesn't it '80's babies) Shelter Boy, Har, Harl-Dog, & Har-Boy. Again I'm sure there are more, but those are the main ones