Hi what an interesting question nothing would happen because the brains of animals are different then the brains of humans. We are created with a special design that interacts with chemicals that causes a certain reaction. The Tree of Knowledge/ Tree of Life is a brain tonic that releases the chemicals that form a map within the brain. This will lead the brain in creating the correct bio environment to complete the body and administer salvation. Animals do not have the complex design, so nothing would happen.