The lowest class beasts were feral beasts. They usually had more strength than domesticated animals, but not by much. They didn't have special bloodlines and didn't have very great Mana control.
That said, their bodies tended to be especially powerful.
The majority of them could be classified as Flux Feral Beasts, with beasts of other categories tending to be of higher order classes.
Above feral beasts were Mancy Beasts. This was actually a large umbrella term, a huge pool of beasts that had reached a certain threshold of Mana control and bloodline density.
Beasts were far more reliant on their bloodlines than humans were. Of course, bloodlines made humans much stronger, but they were also not necessary for a genius to be born.
For beasts, it was the exact opposite. Their bloodline dictated everything.
Theron had read about this sort of thing before, though there were a rare few things that he hadn't read about at least to a small extent.