Cockalier breed overview Mars is 1 year old, cuddly and affectionate, this breed is a charming mix between a Cocker Spaniel and a Cavalier King Charles. Always itching to go for a run, he’s such an adorable fella has so much to offer any family looking for a pup; He is just really fun, and happy dog to have around. He is up to date with all his vaccinations.