The best way to estimate the size of your Shih Tzu Puppy's size full grown, take puppy's weight at 8 weeks and
multiply 3 times.
Example
: 2 lb at 8 weeks = 6 lb full grown

Our Imperial Size Shih Tzu Puppies Average 5-7 pounds full grown.
Our Tiny Shih Tzu Puppies Average 8-10 pounds full grown.
Our standard size Shih Tzu Puppies Average 9-12 pounds full grown.