At first glance, pygmy hippopotamuses resemble their larger relatives, Nile hippopotamuses. But, on closer examination, several differences can be noted. Pygmy hippopotamuses are smaller. They weigh 350 to 550 pounds (158.8 to 249.5 kg), stand about two and a half feet (0.8 m) tall at the shoulder, and measure about five feet (1.5 m) from head to tail. They are more pig-like in shape than Nile hippopotamuses, with proportionately smaller heads and proportionately longer legs and necks. Their tail hairs are branched, not unbranched as found on Nile hippopotamuses.