"Infrasound" is used for elephant communication. Infrasound is from squeezing the trunk. Infrasound can work for 0.6 - 3 miles. Elephants also have seniority in their herd. An aged male elephant can chase other elephants away and scramble for food. It may be an important reason that other teen- aged elephants stay away from the herd in a food crisis.

Normally, elephants live together in a herd. Asian elephant herd may have approximately 4 - 8 elephants. African elephant herds may have 8 - 10 elephants. A few family groups may sometimes join together, and temporary herds may number in the hundreds. A family group consists of a few mature females and a number of teen - aged and young elephants, generally not more than 10 altogether. Adult males are more solitary, though they may join the temporary herds. Young elephants may also form a loose herd with other bachelors. Some elephants will be chased away from the herd, to prevent mating among close relatives. Chang Plai will mix with the female herd during the mating period, then depart again.

The leader of elephant herd is an aged elephant and good at looking for water and food sources. Importantly, the leader must be experienced in avoiding all risks for survival of the herd. A large elephant herd can be separate into small ones for searching for food close to each other. The separation usually lasts 1 hour or all day then elephants will mix with the large group again. The female elephant in the last stage of pregnancy sometimes parts from the herd because of ponderousness. After giving birth to the baby, mother elephant will mix with the herd again. A pregnant elephant can go on at working and should stop working for approximately 6 months before giving birth to the baby. In the last stage of pregnancy period, the pregnant elephant will show stubborn behavior. At that time, dripping milk can be seen. Most of the time, elephants will give birth at night, and they tend to seek a place covered with tender grass or soft ground to bear the coming infant. After being born, a newborn elephant will lay still on its side for a short time, then begin to wag its ears, tail, trunk and legs slowly. After that it will stand up and be able to walk in an hour or two. The first 4 months is the weakest period for a newborn elephant. A newborn elephant still needs its mother's milk. After 4 months of age, baby elephant can eat some plants but mother's milk still plays a role as the most important diet for baby elephant. The second weakest period for a newborn elephant is the weaning period. The baby elephant is very stressed because mother elephant avoids giving milk. The third weakest period of is the adolescent period, when the elephant in this period is curious to learn everything it is surrounded by.