Wait wait wait wait wait..
Cats and dogs. They have litters.
Frankenstein monsters- takes forever to build one.
Vampires? You make them one at a time.
Merfolk- prefer the ocean, anyway.
Only royalty were made into mummies so there arent a lot of them
But cats n dogs run around having litters like crazy. Hence: 4 werewolves and several werecats
Makes sense now. I am OK with this u_u