The cavalier king charles spaniel has a lively and adaptable character and is a popular and obedient dog its relatively sedentary life style means that the breed is prone to overweight and an increased risk of cardiac disease endocardiosis the cavalier king charles spaniel has a long smooth silky coat with naturally intense colours which can be accentuated by certain nutrients in keeping with its size the cavalier king charles spaniel has small jaws with tightly spaced teeth that need s