Sia il maschio che la femmina elefanti africani hanno zanne. Zanne crescono per la maggior parte del loro ciclo di vita, un indicatore di età maggiore significa più vecchi
5400 x 3600 px | 45,7 x 30,5 cm | 18 x 12 inches | 300dpi
Data acquisizione:
2015
Ubicazione:
Botswana
Altre informazioni:
The African elephant is the largest living land mammal, one of the most impressive animals on earth. Of all its specialized features, the muscular trunk is the most remarkable 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. The largest tusk ever recorded weighed 214 pounds and was 138 inches long. Tusks of this size are not found on elephants in Africa today, as over the years hunters and poachers have taken animals with the largest tusks. Because tusk size is an inherited characteristic, it is rare to find one now that would weigh more than 100 pounds. 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. Elephants are "right- or left-tusked, " using the favored tusk more often as a tool, thus, shortening it from constant wear. Tusks will differ in size, shape and direction; researchers use them (and the elephant's ears) to identify individuals. 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.
