1. What is RER and MER?

RER (Resting Energy Requirement) is the number of calories needed for basic physiological functions at rest. MER (Maintenance Energy Requirement) is the total daily calories needed including activity and other factors.

2. How Does the Calculator Work?

The calculator uses these equations:

Where:

• \( weight_{kg} \) — Dog's weight in kilograms
• \( factor \) — Multiplier based on life stage and activity level

Explanation: The equation accounts for the non-linear relationship between body weight and metabolic rate.

3. Importance of Calorie Calculation

Details: Accurate calorie estimation is crucial for maintaining optimal weight, preventing obesity or malnutrition, and supporting specific life stages or activity levels.

4. Using the Calculator

Tips: Enter weight in kg and select the appropriate activity factor based on your dog's life stage and activity level.

5. Frequently Asked Questions (FAQ)

Q1: What if my dog is overweight?
A: For weight loss, feed 80% of MER for ideal weight. Consult your vet for a weight loss plan.

Q2: How often should I recalculate?
A: Recalculate whenever your dog's weight changes by 10% or more, or if their activity level changes significantly.

Q3: What about very active working dogs?
A: Some working dogs may need up to 3-4× RER. Monitor body condition and adjust as needed.

Q4: Are there limitations to this calculation?
A: Less accurate for very small (<2kg) or very large (>100kg) dogs, and dogs with certain medical conditions.

Q5: Should this be the only factor in feeding?
A: No, also consider body condition score, food quality, and individual metabolism. Use as a starting point.