Cavalier King Charles Spaniel Nutrition Guide
Updated 2026-05-08 · Vet-reviewed breed-specific guidance
Daily calories (avg)
423 kcal
Protein target
25%
Fat target
14%
Activity level
moderate
Quick facts
- Size: small
- Adult weight: 13–18 lbs
- Lifespan: 9–14 years
- Activity: moderate
Best foods for Cavalier King Charles Spaniels
- Salmon
- Sardines (taurine)
- Sweet potato
- Carrots
Foods to avoid for Cavalier King Charles Spaniels
- Excess treats
- High-sodium food
Diet considerations & watch-outs
- Heart disease — taurine support
- Easily overweight
- Soft food OK for older dogs
Common health concerns
- Mitral valve disease
- Syringomyelia
- Hip dysplasia
How we calculate calories
We use the standard veterinary RER (Resting Energy Requirement) formula: 70 × (weight in kg)^0.75, multiplied by an activity factor. For a 15.5-lb Cavalier King Charles Spaniel at moderate activity, that's approximately 423 kcal per day. Puppies need 2x maintenance; seniors typically 0.8x.