According to historical records, elephants have long been friends of humans and can provide assistance to them. Elephants are very intelligent, able to open up fields and bury their dead companions in fallen leaves and branches. Elephants have a long lifespan, usually able to survive70Around the age of, it is10Year to Year15Sexual maturity at the age of, with a long pregnancy period22A month. Elephants are widely distributed. About 40 million years ago, their footprints were found on all continents except Oceania and Antarctica. However, now there are mainly two types of elephants: Asian elephants and African elephants.