The Giraffe is sticking out his tongue to take something from a man's mouth.
Giraffe use their 18-20 inch (45-50 centimetre) long prehensile tongue and the roof of their mouths in order to feed on a range of different plants and shoots, most notably from Acacia species.
Africa’s Acacia species have developed fierce defensive thorns, requiring giraffe to use their dextrous tongues to sort out the nutritious leaves from the thorns. Fortunately, a giraffe’s tongue has thickened papillae, which helps to protect it from these vicious thorns. Additionally, thick saliva is also believed to help to protect the giraffe’s tongue and mouth against the defensive mechanisms of their favourite food.