How do you calculate bmi in rats?

To calculate BMI (Body Mass Index) in rats, you can use the formula: BMI = weight (grams) / (length (cm)²). First, measure the rat's weight using a scale and its length from the nose to the base of the tail. Make sure to square the length in centimeters before dividing the weight by this value. This calculation provides a numerical value that can help assess the rat's body condition in research settings.