Savanna elephants live in a rather complex social hierarchy. These animals gather into family units, consisting of about 10 females and their offspring. Reaching maturity, male calves usually leave the family unit, forming bachelor herds or living solitarily. As a general rule, males socialize with these family groups only when mating. Meanwhile, several family herds may gather together, making up a 'clan'. Each clan is dominated by a female matriarch and can consist of as many as several hundred elephants. African bush elephants are very careful and protective animals. Allomothering is a common practice in this species: females can raise calves of other females of their herd. They protect and care for the calves of the herd, while all adults are sleeping. If a calf strays too far, these allomothers are responsible for retrieving the baby. These active animals are constantly on the move. These elephants forage during the daytime hours, wandering the home range of their herd. Savanna elephants freely communicate with conspecifics both verbally and non-verbally.
Savanna elephants have a polygynous mating system, where males are constantly in search of breeding females. They breed throughout the year with peak periods, occurring during the rainy seasons. When mating, males usually stay less than a few weeks with each female and her herd. The gestation period lasts as long as 2 years, yielding a single baby (rarely - twins), which is nursed for about 2 years. The calf then continues to live under the protection of the entire herd until 6 years old, when the young elephant is able to live independently. Males of this species are reproductively mature after 20 years old, whereas females are mature after 10-11 years, being most reproductive at 25-45 years old.
