About 50 years ago it started. People started transforming into animals. No one to this day has ever figured out why someone will transform into an animal. And there is no means to stop it. Of course people freaked out & the like at first. Then the governments of the world came up with a seemingly brilliant solution. They convinced people that transforming into an animal wasn't a terrible thing. You were just leaving humanity for the better simplier life of an animal.
It has mostly worked.
Now for the rules & that of this:
People transform fully into an animal. No anthromorphic animals; unless that occurs in the process of transformation. But must always end in a full animal (feral). They will ultimately also be the natural size of said animal they are transforming into.
People are used to seeing other people transform into animals. It's been happening for so long.
Person transforming into an animal will end up with all instincts, mannerisms, inherited knowledge, ect of animal they are transforming into.
Animals people transform can be any animal; even insects & bugs. Even aquatic animals (like fish). That also includes dinosaurs & other extinct animals.
Person will end up with the natural lifespan of the animal they become.
People will only transform into Real Animals. NO MYTHOLOGICAL ANIMALS!
Rate of transformation into an animal is optional. Whatever rate you want.
Transgender is allowed. Person can be a different gender as an animal.
Person will lose the ability to speak as a human once they fully become an animal or during their transformation.
You can have them suffer a loss of intelligence or knowledge if you want.
Lastly transformation into an animal is permanent.
Hope you have fun with this.
Raven Cross out.