1. What is RER and MER?

RER (Resting Energy Requirement) is the calories needed for basic metabolic functions at rest. MER (Maintenance Energy Requirement) is the total daily calories needed based on activity level and life stage.

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:
  • Adult maintenance: 1.6
  • Puppy (0-4 months): 3.0
  • Pregnant: 1.8
  • Lactating: 4.0
  • Senior/Less Active: 1.2
  • Active/Working Dog: 2.0

3. Importance of Caloric Calculation

Details: Proper caloric intake is essential for maintaining healthy weight, supporting growth in puppies, and meeting increased demands during pregnancy/lactation.

4. Using the Calculator

Tips: Weigh your dog accurately. For raw food diets, divide MER by the kcal per 100g of your food to determine daily portions.

5. Frequently Asked Questions (FAQ)

Q1: How often should I recalculate my dog's needs?
A: Recalculate after any significant weight change (≥10%) or life stage change (e.g., puppy growth, pregnancy).

Q2: What if my dog is overweight?
A: Use target weight rather than current weight, and consider using the "Senior/Less Active" factor temporarily.

Q3: Are these values exact for all dogs?
A: These are estimates. Monitor your dog's body condition and adjust as needed.

Q4: How do I convert pounds to kilograms?
A: Divide pounds by 2.205 (e.g., 20 lbs ÷ 2.205 = 9.07 kg).

Q5: What about very active working dogs?
A: Some working dogs may need factors up to 5.0 - monitor weight and adjust accordingly.