5 , Incredible Facts , About Elephants.<br />In honor of World Elephant Day, <br />here are five incredible facts you might <br />not have known about elephants. .<br />1. , The tusks of an elephant continue to grow <br />throughout the elephant’s entire life, with adult <br />males' tusks growing about seven inches a year.<br />2. , The average lifespan of an elephant is 50 to 70 years, with <br />the oldest elephant in the world reaching the age of 86.<br />3. , An elephant’s trunk is its most important limb, <br />as it is strong enough to rip branches from a tree, <br />yet sensitive enough to pick up a blade of grass.<br />4. , Female elephants have a structured social order <br />and spend their entire lives with their mothers, <br />grandmothers, aunts, sisters and daughters.<br />5. , Elephants are uniquely intelligent and able to display a range of emotions such as grief, compassion and self-awareness
