I am not trying to disagree with you. The point that I am trying to make is that neither you nor the spiritual sources with whom you communicate, can be so certain that animals don’t have soul. Just as there are schools of thought, in the Spirit World that affirm one thing, there are others who affirm the opposite. Read for instance the paragraph bellow taken form the book Franchezzo.

"To originate a thought or to impress your thoughts upon another requires the possession of an intelligent soul germ or spark of the divine essence, and once this has been given the being becomes possessed of an independent individuality it can never again lose. It may cast off envelope after envelope, or it may sink into grosser and still grosser forms of matter, but once endowed with soul-life it can never cease to exist, and in existing must retain the individuality of its nature and the responsibility of its actions. This is alike true of the human soul and the intelligent soul-principle as manifested in the animals or lower types of soul existence.
Whenever you see the power to reason and to act upon such reasoning manifested either in man, the highest type, or in animals, the lower type, you may know that a soul exists, and it is only a question of degree of purity of soul essence. We see in man and in the brute creation alike a power of reasoning intelligence differing only in degree, and from this fact the school of thought to which I belong draws the inference that both alike have a conscious individual immortality, differing, however, in the type and degree of soul essence, animals as well as men having an immortal future for development before them. What are the limits of the action of this law we cannot pretend to say, but we draw our conclusions from the existence in the
spirit world of animals as well as men who have alike lived on earth, and both of whom are found in a more advanced state of development than they were in their earth existences.