The Cava Tzu is a hybrid between the Cavalier King Charles Spaniel and the Shih Tzu. Country of Origin: The Cava Tzu originate in the United States of America.Original Purpose: The Cava Tzu is a designer breed that was developed to be an exceptional family companion. Breed Characteristics: The Cava Tzu is intelligent and easily trainable. The Cava Tzu is affectionate, cheerful, and loyal. The Cava Tzu gets along well with people and other pets. Life Expectancy: Average life expectancy for the Cava Tzu is 10 - 13 years.