Have you ever wondered how ants follow what seem to be invisible trails leading to food? Why male dogs mark their territory by peeing on bushes and lampposts when you take them for a walk? What birds are saying to one another when they chirp outside your window? If so, you're in the right place! In this article, we'll take a look at these—and many other—forms of communication used in the animal kingdom. To learn more, follow the link above.