The African elephant is the largest mammal to walk the earth. There are 2 subspecies of the African elephant, the Savanna (bush) and the forest elephant with about a third of them being the forest elephant. Elephants are matriarchal, meaning they live in female led groups. Usually led by the biggest and oldest female, they will preside over a generational herd of other females (cows) and infants. Male elephants (bulls) tend to roam on their own forming smaller all male groups. Although if a bull mates with a cow they tend to stay close by to keep an eye on their offspring. Elephants have longer pregnancies than any other mammal, which means having a baby is a serious commitment. They usually give birth to one calf every 2 to 4 years. Baby elephants weigh 200 pounds when they are born and stand and 3 feet tall. They can't see very well but like human babies they can recognise their mothers from their touch and smell and stay close to their mothers for the first few months of their lives. Baby elephants drink 3 gallons of their mothers milk a day and can continue to do this for up to 10 years. Luckily elephants are a very supportive and social species and other females help to tend a new baby. Elephants are extremely intelligent and their brains weigh 4 to 6kg.  They are very social and loving animals who love to talk to each other with as many as 70 different sounds recorded  as communication so far. They forge long time relationships and have been known to visit the graves off lost elephants due to the threats they are now facing.