Many horse and pony owners perceive their animals as being an ideal or healthy weight when they may be obese or overweight. The most commonly used standardized practical field method of assessing fat levels in horses and ponies is by body condition scoring (BCS). However, it has become clear that these BCS systems have a number of limitations that may cause inaccuracy. Researchers determined it would be useful to have a body condition index based on measurements of animals which can be used to accurately estimate body-fat percentage.