大象的习性（英文)

An elephant family is ruled by a matriarch (older female), and generally consist of her female offspring and their young
　　In Africa, a basic family unit consists of six to twelve animals, but families of twelve to twenty elephants are quite common
　　An elephant family will split depending on the size of the family, the amount of available food, and how well they are getting along.
　　When the matriarch dies, one of the oldest offspring takes her place.
　　The mating patterns of elephants offer us key insights into family structures and life cycle behaviours. Mating patterns are unique since elephants do not confine mating to a specific time of year. The situation which develops involves the bull pursuing the cow until she is ready for mounting. When the bull elephant desires sexual activity, he approaches the matriarch-led herd. Once the bull finishes his business he joins the bachelor herd or leaves on his own. It is this male-leaving behaviour that highligh