Giraffes travel in herds of 4 to 30 individuals. Females are called cows and males are called bulls. Cows and calves stay together, but all the other animals freely move between herds. When young bulls are 3 to 4 years of age, they leave the herd they were born into. Young bulls challenge each other in controlled fights. This behavior is called "necking."
Giraffes are browsers feeding day and night on tree leaves, flowers and sometimes grass. They tend to avoid feeding during the hottest hours of the day. They reach high into trees, removing vegetation with their 18 inch-long (46 cm-long) tongue and lips.
Although adults can defend themselves from predators with kicks from their large hooves, young giraffes fall prey to lions and sometimes hyenas. All giraffes are more vulnerable to attacks when they are in the crouching position they adopt when they are drinking water.
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Tree leaves, flowers and seed pods