The moral or immoral instincts of an animal do not determine the evidence or non-evidence of a soul. Every animal that someone has shared their lives with will be able to tell you that each relationship is different and that each animal displays unique personalities, aspects and abilities. Anyone who believes that animals do not possess a soul either have never shared companionship with an entity like an animal or believe themselves superior to other entities.
Whenever you adopt the form of a physical "model," you are in it to experience the variety of life through that species, for that moment, for that existence. That is why spiritual entities will incarnate into different animals; they want to live the experience.
The only difference between humans and animals is the experience you ALL get from your existences.
REMEMBER that ALL entities are equal and ALL have PURPOSE.
Animals are very UNDERSTANDING. Animals are in the K(NOW) about many things. They might not have developed human's social or intellectual skills. But look into their eyes and you will see; animals do K(NOW). They have quite advanced UNDERSTANDING, not about human concerns or desires but spiritual ones. Life as an animal is not as simple as people presume.
Animals, like people, incarnate into a physical existence not to service humans but to service life.
Animals live this way of life. They teach us the value of life and the value of death. This is not a sacrifice. It is a PURPOSE! There is much to BE learned through the animal kingdom.
Animals were created for the variety of experience and the opportunity for soul growth.
HELLO ITS ME: An Interview With GOD
Chapter The Animal Kingdom