High-tier cultivators in human society like to establish sects and clans, gathering others to serve and work for them.
High-tier demon beasts are no different.
The largest population of demon beasts on Rhino Horn Continent now consists of Wolf Demons, for a very simple reason: the Tier Five Demon Beast occupying that Tier Five Spirit Mountain has turned into a Tier Five Lower Grade Beast, the "Sinister Heart Demon Wolf".
This "Sinister Heart Demon Wolf" and the wolf demon pack it leads were originally subordinates of a Demon King within the Broken Cloud Mountain Range, holding a mountain there as their territory.
However, due to the "Sinister Heart Demon Wolf"'s vicious habit of devouring the heart of a Tier Three Demon Beast every month, and its predilection for poaching the offspring and subordinates of other Tier Five Demon Beasts, it became disliked by others, who then banded together to resist and hunt it down.