This document provides information on identifying various livestock breeds through their physical characteristics. It discusses terminology used to describe the sex and age of cattle, swine, poultry and other animals. Key physical traits are outlined to identify common beef and dairy cattle breeds like Angus, Hereford and Holstein. Characteristics of swine breeds including American Landrace, Duroc and Hampshire are also detailed. Finally, the document outlines egg-laying and meat chicken breeds as well as turkey varieties.