1. What is RER and MER?

RER (Resting Energy Requirement) is the calories needed for basic bodily functions at rest. MER (Maintenance Energy Requirement) is the total daily calories needed including activity level.

2. How Does the Calculator Work?

The calculator uses these equations:

Where:

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

Explanation: The equation accounts for metabolic scaling where larger animals need relatively fewer calories per kg than smaller animals.

3. Importance of Calorie Calculation

Details: Proper calorie calculation helps maintain ideal weight, prevents obesity or malnutrition, and supports health through all life stages.

4. Using the Calculator

Tips: Weigh your dog accurately. Select the appropriate factor based on life stage and activity level. Monitor weight and adjust as needed.

5. Frequently Asked Questions (FAQ)

Q1: How often should I recalculate my dog's needs?
A: Recalculate whenever weight changes by 10% or more, or if activity level/life stage changes significantly.

Q2: What if my dog is overweight?
A: Use target weight rather than current weight, and consult your vet for a weight loss plan.

Q3: Are there breed differences?
A: Some breeds may have slightly different metabolic rates. Giant breeds may need fewer calories than calculated.

Q4: What about pregnant/lactating dogs?
A: These have special requirements - consult your vet as needs increase significantly.

Q5: How accurate is this calculation?
A: It provides a good starting point but individual needs may vary by ±20%. Monitor body condition and adjust as needed.