The thought of a secret animal language has always enticed me. When I was very young, my parents had me convinced that at exactly midnight on Christmas morning, all animals could talk for one hour. I tried so hard to stay awake, to maybe catch the whispers of my beloved cat, but never quite managed it. Since then, the thought has never escaped my interest. I have been training horses and endurance racing my entire life and I even worked at a vet's office for about 5 years. Experience has taught me that if we are going to limit language to the definition of civilized, human speech, then no. Animals do not "talk". However, they do communicate and, with some patience, observance and training, they will communicate with you too. I've often found that animals tend to express emotions more than anything. If you know what to look for, it becomes incredibly easy to discern what a horse is feeling. Anger/fear is often the the most expressive and obvious emotion in animals and this is because it is a necessity from a survival standpoint. I grouped anger and fear together purposefully because oftentimes intense fear is what causes anger in animals. Everyone has heard of the basic instincts of "fight or flight" which are even more highly tuned in other animals then us humans. When an animal feels threatened or cornered or as if it's choice of flight is taken away, anger will emerge. Horses express this by pinning their ears to their head, elongating their neck and snapping their teeth at the source of their anger. They will also resort to kicking in extreme anger or rearing up on their hind legs in extreme fear. This is just a minuscule sample of what you can learn simply by observing animal behavior. Whether you classify it as language or not completely depends on your definition.