Lesser kudu kudu and nyala form a clade, and collectively separated from the sister clade 13.8 million years ago. The lesser kudu has 38 diploid chromosomes. However, unlike others in the subfamily Tragelaphinae, the X chromosome and Y chromosome are compound and each is fused with one of two identical autosomes. The lesser kudu is a spiral-horned antelope. The head-and-body length is typically between . Males reach about at the shoulder, while females reach . Males typically weigh and females . The bushy tail is long, white underneath and with a black tip at the end. Distinct signs of sexual dimorphism are
Greater kudu prey on greater kudus, they are unable to bring down a bull, and consequently target the more vulnerable cows and offspring. There are several instances reported where Nile crocodiles have preyed on greater kudus, although based on records the larger mammalian carnivores statistically are much more dangerous to the kudu and comparable large ungulates, or at least those with a preference for dry, upland habitats over riparian or swamp areas. When a herd is threatened by predators, an adult (usually female) will issue a bark to alert the rest of the herd. Despite being very nimble over rocky hillsides and