Cat Calorie Needs Calculator

Cat Calorie Equations:

\[ RER = 70 \times (weight_{kg})^{0.75} \] \[ MER = RER \times factor \]

Resting Energy Requirement (RER):

Maintenance Energy Requirement (MER):

1. What is RER and MER?

RER (Resting Energy Requirement) is the number of calories a cat needs at complete rest. MER (Maintenance Energy Requirement) is the actual daily calorie need accounting for activity level and life stage.

2. How Does the Calculator Work?

The calculator uses these equations:

\[ RER = 70 \times (weight_{kg})^{0.75} \] \[ MER = RER \times factor \]

Where:

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

Explanation: The equations account for the non-linear relationship between body weight and metabolic rate in cats.

3. Importance of Calorie Calculation

Details: Accurate calorie estimation is crucial for maintaining healthy weight, supporting growth in kittens, and managing weight loss/gain programs.

4. Using the Calculator

Tips: Enter weight in kilograms and select the appropriate life stage/activity factor. For accurate results, weigh your cat regularly.

5. Frequently Asked Questions (FAQ)

Q1: How often should I recalculate my cat's calorie needs?
A: Recalculate whenever your cat's weight changes by more than 10% or life stage changes (e.g., kitten to adult).

Q2: What if my cat is overweight?
A: Use the weight loss factor (1.6) but consult your vet for a supervised weight loss program.

Q3: Can I use this for very young kittens?
A: For kittens under 4 weeks, consult your vet as their needs differ significantly.

Q4: Why is the equation non-linear?
A: Metabolic rate doesn't increase linearly with weight - smaller animals have higher metabolic rates per kg.

Q5: What about pregnant/nursing cats?
A: Pregnant cats need 1.6-2.0×RER, nursing cats need 2.0-6.0×RER depending on litter size.