Growth & Life Stages

Shih Tzu growth and life stages cover much more than weight. Puppies change physically and behaviorally as they develop adult teeth, a mature coat, greater coordination, new social skills, and more predictable routines. Adult and senior dogs then bring different needs related to exercise, weight, grooming, dental care, and veterinary monitoring.

In this section, you’ll find guides about puppy growth, adult size, developmental milestones, coat transitions, maturity, senior changes, lifespan, age-related care, and how expectations should change throughout a Shih Tzu’s life. Growth charts and weight estimates should always be treated as guides rather than guarantees for an individual dog.

For standard size and general breed characteristics, start with our Shih Tzu facts. If you are comparing unusually small dogs, our teacup Shih Tzu guide explains why informal size labels need additional context.