Greater kudu average length of , with the record being . They diverge slightly as they slant back from the head. The horns do not begin to grow until the bull is between the age of 6–12 months, twisting once at around 2 years of age, and not reaching the full two and a half twists until they are 6 years old; occasionally they may even have 3 full turns. This is one of the largest species of antelope. Bulls weigh , with a maximum of , and stand up to tall at the shoulder. The ears of the greater kudu are
Lesser kudu rate of decline has increased to 20% over two decades. Presently, the IUCN rates the lesser kudu as "near threatened". Around a third of the population of the lesser kudu occurs in protected areas such as Awash, Omo and Mago National Parks (Ethiopia); Lag Badana National Park (Somalia); Tsavo National Park (Kenya); Ruaha National Park and game reserves (Tanzania), though it occurs in larger numbers outside these areas. Population density rarely exceeds 1/km., and is generally much lower. The handsome head of the male lesser kudu, with his elegant spiraled horns, is the symbol of the Saint Louis Zoo. Lesser