An ibex (: ibex, ibexes or ibices) is any of several species of wild goat (genus Capra), distinguished by the male's large recurved horns, which are transversely ridged in front. Ibex are found in Eurasia, North Africa and East Africa. The name ibex comes from Latin, borrowed from Iberian or Aquitanian, akin to Old Spanish bezerro "bull", modern Spanish becerro "yearling". Ranging in height from and weighing , ibex can live up to 20 years. Three closely related varieties of goats found in the wild are not usually called ibex: the markhor, western tur, and eastern tur.
A male ibex is referred to as a buck, a female is a doe, and young juveniles are called kids. An ibex buck is commonly larger and heavier than a doe. The most noticeable difference between the sexes is the larger size of a buck's horns. The doe grows a pair of smaller, thinner horns which develop considerably more slowly than those of a buck. The ibex's horns appear at birth and continue to grow through the rest of its life. Species of wild goats that are called ibex are:
The Asian ibex also known as the Siberian ibex (Capra sibirica) is a wild goat inhabiting long mountain systems in central Asian deserts and the northwestern Himalayas. The animal is 80–100 cm high at shoulder, and weighs an average 60 kg. The adult males have long pointed beards and scimitar-shaped horns with prominent ridges on the frontal surface. The coat is dark brown with greyish underparts, and a dorsal stripe runs from the neck to tail. Adult males also have grey saddle patches on their backs. The species exhibits sexual dimorphism, as the females are smaller with small straight horns that are widely separated at the base. Asiatic ibex is widely distributed over an area stretching from the Hindu-Kush Mountains in Afghanistan to Sayan Mountains in Mongolia. The animals are found most frequently at elevations ranging from 3000 to 5300 m above sea level, but are also known to occur in areas as low as 1000 m in the Altai Mountains. They have a predilection for rugged terrain as an anti-predator strategy.