What's the difference between Labrador Retriever vs Cavalier King Charles Spaniel? Which can be better for hunting? Labrador Retriever dogs have low to an average impulse to chase and catch something like a cat or any other small aminals. Lifespan of Boston Terrier versus Cavalier King Charles Spaniel. The lifespan of Boston Terriers is between 13 to 15 years. The average lifespan of Boston Terriers is 14.0 years. The lifespan of Cavalier King Charles Spaniels is between 9 to 15 years. The average lifespan of Cavalier King Charles Spaniels is 12.0 years. F1bb Cavapoo is a cross between an F1b Cavapoo back to a purebred Poodle and rarely to a Cavalier King Charles Spaniel. F2 Cavapoo is the second generation. A cross between two first generation Cavapoos, also known as Cavapoo F1. F3 Cavapoo is the third generation and a result of crossing between two second generation Cavapoos, also known as F2. Earlier, we posted about the English Toy Spaniel, but let’s be honest. Some of us struggle with the difference between a Cavalier King Charles and the English Toy Spaniel. Here’s a guide! Cavalier King Charles Spaniel by Marvin Blaine is available as a print, poster, pouch, towel and more here. The poster was created by Kathie Lawrence using a […] The Most Remarkable Differences Between the Cavalier King Charles Spaniel and the Great Pyrenees; The Similarities Between the Cavalier King Charles Spaniel and the Great Pyrenees; Size Comparison of the Cavalier King Charles Spaniel versus Great Pyrenees; Appearance (Colors) of the Cavalier King Charles Spaniel and the Great Pyrenees The Most Remarkable Differences Between the Cavalier King Charles Spaniel and the Jack Russell Terrier. Below is a list of where the Cavalier King Charles Spaniel and the Jack Russell Terrier are most different: Cavalier King Charles Spaniels do the things they do with very low vigor. They are not forceful. N2GZ8w.