Well people all sorts of religions and myths originate from a source, Some religion have animal like gods or beastmen. Even if this doesn't have a relevance per say magic it has relevance to nature and humans. People in the long run have forgotten that they are animals in nature and pride themselves as superior, which isn't the case. We follow the primitive code that nature gave us, yet we do not want to admit it. Simply it is to say that we have forgotten our original roots or tried to mask ourselves in a delusion that we are a greater creature than all else. And that nothing is equal to us. People debate animal are not sentient, but many have seen that as false. Animals like us are able to live in a complex society were they have leaders, soldiers, and slaves. Human people still have those kinds of society where there are hierarchical regimes. Even when you compare an ant to a person, these "Simple" minded insects live in a way very similar to our own, so what's not to say animals have a language that we cannot comprehend?
Like this monkey not speak , hear, or see, most simply refuse to see nature's collaborated work and refuse to see other beings of this world as sentient.