Relative to its body size, an Anteater has the longest tongue. It is an adaptation of nature which allows it to go deep into an ant nest/community and its sticky tongue, which is immune to ant bites, and have a good meal. The giraffe has a very long neck and a very long tongue so it can feed of tall trees. Since it does not have hands, it uses its tongue to grasp the yummy Leafs. These are adaptations that nature provided. Humans don't need such tongues because we have ...hands! We can climb tall trees and grasp leaves. So, to go back to what I believe is the purpose of this thread, here is an appropriate photo.