I believe there's no being on earth without a language, just that we can't understand it. I mean you look at a rat and say oh, come here, I won't hurt you but it dashes off, why? rats don't understand nor speak English.
Similarly, we can't understand nor speak their language like we speak English.
But what I find fascinating is that sometimes, somehow, we can actually understand animals if we look within, there's some sort of energy within that can read the state of their minds, just how dogs can sense when someone is scared cause maybe, he's up to no good.