"Why do we have these other forms? Are they for protection? What ever happened in evolution that created them?"
Daemons are a phenomenon in the world Allan where one is able to transform into a particular animalistic form. Coupled with psyches, a form of magic somewhat similar to the Mother series, these forms are paired with particular elements. These other forms often have unusual details or much larger sizes to their wild counterparts. Daemon shifting is not an easy skill to achieve. If bleed overs do not occur during puberty, one will likely never be able to shift.