The Science of Pet Nutrition & Energy Requirements
Maintaining a healthy weight is one of the most effective ways to extend your pet's lifespan. Overweight pets are at a higher risk of diabetes, joint pain, heart disease, and breathing difficulties. To keep your pet in peak condition, you need to understand their daily calorie needs — scientifically known as Daily Energy Requirement (DER).
Step 1: Calculate Resting Energy Requirement (RER)
RER is the energy required for basic bodily functions while resting. The formula:
RER = 70 × (Body Weight in kg)0.75
Step 2: Adjust for Activity Level (DER)
Multiply RER by a factor based on your pet's lifestyle:
- Neutered Adult Dog: RER × 1.6
- Active/Working Dog: RER × 2.0 to 3.0+
- Neutered Adult Cat: RER × 1.2
- Kittens: RER × 2.5
The 10% Treat Rule
Treats should never make up more than 10% of your pet's daily caloric intake. The remaining 90% must come from a complete and balanced commercial diet.