Giraffes are the tallest animal and can grow up to 7 feet tall. They live in open savannahs in Africa and form herds of 3-70 giraffes. Giraffes eat acacia leaves and twigs and get most of their water from their food. They have long necks, tongues, and legs that allow them to reach food and defend themselves with powerful kicks if threatened. Baby giraffes are called calves and can stand within 10 minutes of birth. Giraffes were almost extinct in the 20th century due to hunting but conservation efforts have helped populations recover.