Although genetically distinct from the sub-Saharan African lion, the difference is not large. In fact, the difference is less than that found between different human racial groups. The closeness in genetic make-up between Asiatic and African lions indicates that the two populations separated as recently as 100,000 years ago. The most noticeable physical characteristic found in all Asiatic lions, but rarely in African lions, is a longitudinal fold of skin running along the belly. Also, the mane of the Asiatic lion is generally shorter than that of the African lion, so the ears are always visible.
Asiatic lions are, in general, slightly smaller than African lions.
The largest Asiatic lion on record measured 2.9 m from nose to tail-tip. Like their African cousins, Asiatic lions are highly sociable animals living in social units called prides. There are however differences in pride make up between the sub-species. Based on the average number of adult females, the Asiatic pride is smaller. Studies have shown that most Gir prides contain just two adult females as compared to the average African pride which contains 4 to 6 adult females.