A few rules about the species :

Closed species, it is forbidden to create one without the agreement of the creator.

Obligatory :
The Kemoneis can eat anything, but it doesn't bring them anything.
They need to feed on dreams/nightmares to fill their gem and be able to use their magic.
If they absorb too many negative dreams, they can become aggressive and display a more sinister/malefic form (choice of this form to the owner).
Power to choose the owner

Not Obligatory :
The Kemoneis live in a different dimension with floating islands and can cross the various dimensions.

Kemonei > https://sachatmichiaelis.wixsite.com/website