Having a drink of water tends to be somewhat challenging when you are over four meters tall. In order to get to the water, a giraffe has to spread its front legs at awkward angles, leaving it in a rather vulnerable position to predators such as lions. Giraffes have learnt to deal with this difficulty in various ways. Their need for water is reduced by the fact that they are able to obtain almost all they need from the plants they eat. An adult giraffe will only need to drink water once a day, whereas the more vulnerable younger giraffes are even more efficient at getting the water they need from their diet and often do not need to drink water at all. A giraffe does not sweat or pant like many other mammals, their body temperature fluctuates according to the surrounding temperatures and this allows them to conserve water.