Vicuña:

In the Andean highlands four living species of ruminants of which the vicuña is the smallest and the only representatives, along with the guanaco, which remains in the wild. Live at high altitudes, always above the three thousand five hundred meters, in regions that are known as Puna.

The vicuña live, like many other social ungulates in single-sex herds, first the males and other females and their young led by a dominant male. It is natural that the herds of unmarried males are more numerous. During the rut because of the dominant male is very coveted and then the disputes arise between them. These consist of a succession of blows, kicks and bites to stop the flight of one of the two contenders.

Parturition in vicunas are composed of a single recental that can enter and move freely within hours of birth. At ten or eleven months of age, males are expelled from the herd and form new groups of unmarried males.

The vicuña is a free species in danger of extinction due to hunting and a systematic high rate of infant mortality and prenatal care, which prevents the population to regenerate. It is the only ungulate that has teeth of continuous growth. Their wool, very soft, is the world's most quoted and has been a cause of the disappearance of most of their populations.