The reason why spirit beasts were called spirit beasts was not only because of their increased intelligence, but also because they could control their own bodies.
Compared to demonic beasts, the improvement of spirit beasts was in many aspects. Not only did their strength increase, but their speed also increased greatly.
Take the pegasus for example. A pegasus at the Demon Emperor Realm could travel less than ten thousand miles a day, but it was already considered fast among Demon Emperors.
After reaching the Spiritual Venerable level, the Pegasus could travel 100,000 times a day. It could also use Spiritual Qi to build a barrier around its body to block the wind blades. This was also the reason why Spiritual Beasts could travel so fast.
Generally speaking, only spirit beasts could cast such a barrier when flying at full speed.
