Language is considered to be a very complex form of communication that occurs among the animals race. It is a set of verbal and non-verbal conventions that animals use to express their ideas and wants. Animals use words while talking to express their needs and wants and they cry, slouch and make faces when they want to express feelings. Animals, or in other words non-humans also show signs of communication such as a dog wagging its tail when excited or a bird singing a song to attract the opposite sex. However do animals have their language? Scientists are still unsure about this question.