The African elephant is the largest living land mammal, one of the most impressive animals on earth. It can go up to more than 11 feet in size, up to 6.5 tons in weight, with a life span of about 70 years.

Its muscular trunk has multiple functions. It serves as a nose, a hand, an extra foot, a signaling device and a tool for gathering food, siphoning water, dusting, digging and a variety of other functions. Not only does the long trunk permit the elephant to reach as high as 23 feet, but it can also perform movements as delicate as picking berries or caressing a companion. It is capable, too, of powerful twisting and coiling movements used for tearing down trees or fighting. The trunk of the African elephant has two finger-like structures at its tip, as opposed to just one on the Asian elephant (Elephas maximus).

The tusks, another remarkable feature, are greatly elongated incisors (elephants have no canine teeth); about one-third of their total length lies hidden inside the skull.  Both male and female African elephants have tusks, although only males in the Asiatic species have them. Tusks grow for most of an elephant's lifetime and are an indicator of age.  The cheek teeth erupt in sequence from front to rear (12 on each side, six upper and six lower), but with only a single tooth or one and a part of another, being functional in each half of each jaw at one time. As a tooth becomes badly worn, it is pushed out and replaced by the next tooth growing behind. These large, oblong teeth have a series of cross ridges across the surface. The last molar, which erupts at about 25 years, has the greatest number of ridges but must also serve the elephant for the rest of its life. When it has worn down, the elephant can no longer chew food properly; malnutrition sets in, hastening the elephant's death, usually between 60 and 70 years of age.

The African elephant's ears are over twice as large as the Asian elephant's and have a different shape, often described as similar to a map of Africa. The nicks, tears and scars as well as different vein patterns on the ears help distinguish between individuals. Elephants use their ears to display, signal or warn when alarmed or angry, they spread the ears, bringing them forward and fully extending them. The ears also control body temperature.

The sole of the elephant's foot is covered with a thick, cushionlike padding that helps sustain weight, prevents slipping and deadens sound. When they need to, elephants can walk almost silently. An elephant usually has five hoofed toes on each forefoot and four on each hind foot. When it walks, the legs on one side of the body move forward in unison

Elephants are generally gregarious and form small family groups consisting of an older matriarch and three or four offspring, along with their young. It was once thought that family groups were led by old bull elephants, but these males are most often solitary. The female family groups are often visited by mature males checking for females in estrus. Several interrelated family groups may inhabit an area and know each other well. When they meet at watering holes and feeding places, they greet each other affectionately.

Females mature at about 11 years and stay in the group, while the males, which mature between 12 and 15, are usually expelled from the maternal herd. Even though these young males are sexually mature, they do not breed until they are in their mid- or late 20s (or even older) and have moved up in the social hierarchy. Mature male elephants in peak condition experience an annual period of heightened sexual and aggressive activity called musth. During this period, which may last a week or even up to three to four months, the male produces secretions from swollen temporal glands, continuously dribbles a trail of strong-smelling urine and makes frequent mating calls. Females are attracted to these males and prefer to mate with them rather than with males not in musth.

Smell is the most highly developed sense, but sound deep growling or rumbling noises is the principle means of communication. Some researchers think that each individual has its signature growl by which it can be distinguished. Sometimes elephants communicate with an ear-splitting blast when in danger or alarmed, causing others to form a protective circle around the younger members of the family group. Elephants make low-frequency calls, many of which, though loud, are too low for humans to hear. These sounds allow elephants to communicate with one another at distances of five or six miles.

Diet: An elephant's day is spent eating (about 16 hours), drinking, bathing, dusting, wallowing, playing and resting (about three to five hours). As an elephant only digests some 40 percent of what it eats, it needs tremendous amounts of vegetation (approximately 5 percent of its body weight per day) and about 30 to 50 gallons of water. A young elephant must learn how to draw water up into its trunk and then pour it into its mouth. Elephants eat an extremely varied vegetarian diet, including grass, leaves, twigs, bark, fruit and seed pods. The fibrous content of their food and the great quantities consumed makes for large volumes of dung.

Usually only one calf is born to a pregnant female. An orphaned calf will usually be adopted by one of the family's lactating females or suckled by various females. Elephants are very attentive mothers, and because most elephant behavior has to be learned, they keep their offspring with them for many years. Tusks erupt at 16 months but do not show externally until 30 months. The calf suckles with its mouth (the trunk is held over its head); when its tusks are 5 or 6 inches long, they begin to disturb the mother and she weans it. Once weaned usually at age 4 or 5, the calf still remains in the maternal group.

Source of information:Collins Guide to African Wildlife and African Wildlife Foundation Website

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