ily. Elephants must consume these giant quantities of food, due to their poor digestive system. The small intestine is 82 feet long, the large intestine 21 feet long, and the rectum adds a further 13 feet. The problem with the digestive tract lies in their gut; elephants have too few symbiotic bacteria. These are the organisms which help break down the cellulose of plant cell walls by producing enzymes called cellulases. The most remarkable feature of the elephants digestive system is its 5 feet long appendix, bigger than the stomach. Proteins, starches, and sugars are digested in the appendix. The elephant will excrete almost 200 pounds a day of semi-digested food. Elephants live together in strong family units which might have as few as two or as many as twenty members. When the group gets too big, it splits up; but the groups stay in close contact. Elephant life revolves around this unit which is usually headed by the oldest female. The family offers protection, aid, comfort, and teaching to all of its members. Within the units are cows, calves, and bulls. The male bulls are very solitary and most of the time travel only with other males, except during mating season when the bulls travel with the pack looking for a mate. The males remain with the family unit until they are about fourteen and then leave the family to join the other males. The African elephant usually gives birth to one calf every four years. The gestation period is approximately twenty to twenty two years. The newborn calf, which weighs 200-300 pounds and stands about three feet high, is cared for by all of the females in the pack, not just by the mother. The calf may nurse as long as eight years, or until its tusks are too long for the mother. It takes about 14 to 15 years for an elephant to fully mature. They grow to about 10-13 feet tall and 7.5 meters in length and weigh as much as 7 tons. The family will remain together throughout their lives. The elephants body ...
