Altai argali are the largest sheep in the world and also have the heaviest horns. The horns of mature males normally weigh 45 to 50 pounds and up to 75 pounds (35 kg). It is 15% of all weight of body! Argali rams stand up on their back legs to slam their horns into one another to compete for mating rights, and they make so much noise that they can be heard a kilometer away. Argali inhabits the mountain regions of Central Asia and is usually found at altitudes of 1000 meters and above. The threats to argali are habitat loss and over-hunting. They are killed for their meat and magnificent horns, which are traditionally valued by local hunters.