Back in the days when the laws were taught on Phoenix Mountain, Old Priest Mo passed down the art of controlling beasts, explaining the existence of spiritual beasts and brute beasts in the world.
This spiritual beast refers to those who have a bit of wisdom in comprehending nature and the universe, with the chance to awaken their spirit intelligence in the future.
Ordinary animals such as cats, dogs, and dolphins can perform some miraculous cooperation through training, but this is merely a reflection of skill from practice or cleverness, not spirituality.
Like the earliest Brother Fatty and the green snake, now that was real spirituality.
Nowadays, mutated animals are everywhere, but spiritual beasts make up a small proportion. The Kingdom of Jushi has two hundred thousand priests, over a thousand of Innate level, yet such a small base still hasn't one for each person.