Cavalier King Charles Spaniels are a small breed with a moderate activity level and a well-documented predisposition toward heart conditions, particularly mitral valve disease. This makes nutrition an especially important factor in their overall health management. A diet that supports cardiovascular function, joint health, and a healthy weight should be the foundation of every feeding plan for this breed.
Because Cavaliers tend to gain weight easily, calorie-dense foods should be measured carefully rather than free-fed. Most adult Cavaliers do well on approximately 400 to 600 calories per day, though this varies with age, activity level, and individual metabolism. Puppies and nursing mothers will need proportionally more, while sedentary seniors may need less.
The ideal macronutrient balance for a Cavalier includes a moderate-to-high protein content from quality animal sources, moderate fat levels to support their silky coat without encouraging obesity, and complex carbohydrates that provide sustained energy. Omega-3 fatty acids are particularly beneficial for this breed, as they support both cardiac function and skin health.
Cavaliers can also be prone to food sensitivities, which may manifest as ear infections, skin irritation, or digestive upset. Owners who notice recurring issues should work with their veterinarian to identify potential triggers and consider limited-ingredient formulations that make it easier to isolate problem proteins or grains.