Animal communication is very similar to that of humans insome ways. It can be vocal， visual， or tactile. Some animalsuse chemicals to communicate， which humans are virtuallyincapable of. Animal "language" is obviously not as complexas the human language， yet only a few species do have anetwork of communication that is both comprehensive andfar-reaching. One such species is the elephant. Elephantsuse a sophisticated system made up of all four forms ofcommunication.Research into elephant communication has made certainconclusions as to the reasons for the complexity. The socialsystem of elephants is unusually intricate， necessitating amore complex level of communication. A hierarchy doesnot exist； however， there is a social structure where certainmembers of the group communicate with each other. Theyappear to cooperate with a leader， who has been observedto be the matriarch. Physically， the brain of the elephant islarge enough to allow the animals to have more complexthoughts and a greater capacity for the storage of memories.Finally， elephants have a longer lifespan and have collectedenough knowledge about life and their surroundings.
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