Where do the magical beasts come from in Beast Quest?

The magical beasts in Beast Quest all evolved from a Beast called Anoret who created the first Avantian Beasts known as Firepos, Gulkien, Nera, Falkor,Varlot and the Troiden.

(Some of the Beasts were created by wizards such as the beasts in series 2, 6, 9 and 10)

Firepos, Gulkien, Nera, Falkor, Varlot and the Troiden can be found in The Chronicles of Avantia by Adam Blade