RER = 70 × (weight in kg)^0.75
A dog's daily calorie need begins with Resting Energy Requirement: RER = 70 × (kg)^0.75. Maintenance Energy Requirement (MER) = RER × activity factor. Typical factors: neutered adult 1.6, intact adult 1.8, weight loss 1.0, light work 2.0, growing puppy 2.0-3.0, heavy work (sled dogs) 5.0-8.0. A 50-lb neutered adult needs ~900 kcal/day. Most dry dog foods provide 300-400 kcal/cup. Always check the specific caloric content on your food's label. Start with calculated amounts and adjust based on body condition — if your dog gains weight, reduce by 10%. Treats should not exceed 10% of daily calories.