Well that's another angle; some people believe animals have souls of some kind. But even they tend to stop at, say, trees.
Let me put this clearly. If someone believes that animals and trees (and sagebrush and gila monsters and kumquats) have immortal souls which last into eternity - they are incorrect. Man is not "king of the animals": he is Man, a being with free will and an immortal (and damnable) soul. As Man is only a million years old (tops): some special creation is called for: we cannot evolve immortal souls.