Male African Elephant (Loxodonta africana) is the world's largest land mammal. All the elephants found in Namibia are African elephants which live in small families of between 10 and 20 animals, and these groups frequently congregate in larger herds at communal waterholes, led by dominant females (matriarchs). Bulls live alone or in small bachelor groups, only joining the herds when the cows are in season. Males can be identified with a rounded rather than angular foreheads and thicker tusks. The flaps of the ears are very large reaching a height of 2m and a breadth of 1.2m.