RESEARCH ARTICLE Open Access DXA, bioelectrical impeda m h of

Full list of author information is available at the end of the articleequal height and body weight may look completely dif-ferent from each other because they have a different body composition. Fat mass (FM) and lean mass (LM) can be estimated and determined by different techni-ques, varying in precision and accuracy. Methods described thus for dogs and cats include body mass index, body condition score (BCS), biometry (BIO), Many equations are available to estimate the body composition of humans. Due to the convenience of ap-plication, BIO is the non-invasive method most used to characterize groups and populations [3,4]. Regardless of the method used to predict the body composition, the validity of an equation depends on the degree of preci-sion and accuracy with which the variables are estimated within or outside the population of origin [5]. Therefore, most of the equations are specific, and can achieve the highest predictive ability when applied to a population similar to that from which were derived [3,4]. * Correspondence