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Elephantiasis is caused by obstruction of the lymphatic system, which results in the accumulation of a fluid called lymph in the affected areas. Functioning as part of the immune system, the lymphatic system helps to protect the body against infection and disease.
Elephants are the largest living land mammals. The largest elephant recorded was one shot in Angola, 1974. It weighed 27,060 pounds (13.5 tons) and stood 13 feet 8 inches tall. Their skin colour is grey. At birth, an elephant calf may weigh 100 kg (225 pounds).