Stikini, The Native American Were-Owl That Pukes Up Organs
Where Western culture has werewolves, the Native American Seminole culture has the stikini, which is kind of a cannibalistic were-owl.
Which sort of seems like a consolation prize to being able to turn into a badass werewolf,
but you take what you can get.
According to Seminole lore, stikini are witches who, for reasons known only to themselves, magic on up into nocturnal owl-people in order to prey upon their sleeping neighbors. You'll never know which of your friends is secretly a magic murder-owl, because they look like regular people by day, but upon nightfall they go about their terrible avian transformation.
And it's not comfortable for them, either. To become an owl, they first have to vomit out all of their internal organs. We're not sure what this entails, whether they can just stick their fingers down their throat or whether they have to choke down some Arby's, but in any case, once they've vacated their entire body cavity, they hang their organs in a tree so that nothing eats them. Although it seems to us like this would make them easy pickings for, you know, regular owls. We don't know; we didn't make up the story.