What are the four stages of the King Charles cavalier?

The four stages of a Cavalier King Charles Spaniel's life typically include puppyhood, adolescence, adulthood, and senior years. Puppyhood lasts from birth to about six months, characterized by rapid growth and socialization. Adolescence occurs from six months to two years, marked by increased energy and testing boundaries. Adulthood spans from two to around eight years, when the dog is fully mature, while the senior stage begins around eight years, often involving changes in health and activity levels.