1. Why Do Giraffes Have Long Necks
Giraffes have long necks so that they can reach the top of trees and feed on the leaves which grow there.
As other animals (which do not have long necks) feed on the lower parts of the tree, Giraffes do not have to compute for the same source of food, and thus there is plenty of food for all.

2. Why Do Giraffes Have Long Necks
This is one of Nature’s ways of ensuring that food sources are used to the best advantage and nothing is wasted.
By stretching their long necks upwards, Giraffes can browse on leaves six metres above the ground.

3. Why Do Giraffes
Having such a long neck is fine for eating the tops of trees, but it is a long way down when the giraffe wants to drink.
Giraffes have to spread their legs wide apart to enable their heads to get close enough to the water to drink.