How big do Jack Russell shih tzus get?

Jack Russell Shih Tzus, a mixed breed of the Jack Russell Terrier and Shih Tzu, typically weigh between 10 to 20 pounds and stand around 10 to 15 inches tall at the shoulder. Their size can vary based on genetics and individual traits from each parent breed. Generally, they are small to medium-sized dogs, making them suitable for various living environments.