With these photos it's hard to tell because he is leaning forward. I know it's not real precise, but I had hard time keeping Zulee still to measure her. I ended up having her stand and made a mark on the surface behind her. I then measured from the floor to the mark.
I have a pet companion, but I was curious like you are, especially since she came from a toy breeder. Even though she is taller than I expected, she couldn't be better.
I just love looking at his pictures. I'm thinking he is month older. Zulee was born 6-30-09.
I'm sure someone else can give some suggestions on getting a more precise measurement.