Dragons. They were one of the mightiest beasts in any realm but they were not alone at the top. Divine bloodlines were present in all races to a varying degree of quality but there were 4 at the top.
The dragon, phoenix, black shelled tortoise, and the white tiger. Even though humans believed that meant they ruled over other beasts, it was not wholly accurate. It simply meant that they grew at an alarming pace few could keep up with so their strength became massive compared to others.
Even so, other races could beat them if they had enough power or numbers. No one was invulnerable or absolute.
There were exactly 1 exception to that rule. A True Lord invoking Heaven and Earth. If they did so, no beast in existence could stop them. Heaven and Earth were not so lax that petty wills could be invoked, yet no beast in their right mind would cross one.
It was best to not invite the Wrath of Heaven on your bloodline!