During this year I got very fired up with the idea of "Children of the Forest". This is a settlement of people living in the woods. They are able to turn into their patron spirits. Simply put - werewolves.
Yes, the idea is not new. But these are my toys) One of the basics is the concept from the cartoon "Brother Bear".

At the age of 6, children from tribes can not arbitrarily, partially take on the appearance of their spiritual patrons (ears, tails, fur coat).
At the age of 15, they undergo an initiation rite - a test, as a result of which they are able to fully transform into an animal.

In ordinary life, many use a human form or partial transformation.