General Information (to help you out)
Healing: Shape-shifters heal very quickly from minor wounds, and even horrible injuries (say, a bullet wound). But, those horrible injuries will only heal after you have received medical attention. So yes, shape-shifters can go to the hospital.
The Alpha: Currently, Starr Argent is the Alpha of the wolf pack. Carrie is the Alpha of the cat pack. Alphas are the most powerful of the pack, and they are kind of like the boss of a workplace. They are there to recruit new members to the pack, and also to help the members control their powers. A beta can become an Alpha by killing the Alpha, but it's very hard to do (let's not get any ideas, okay?).
Beta(s): Part of the pack, and if you aren't the Alpha, you're a beta.
An Omega: An omega is a lone shape-shifter, or someone who travels without a pack.
Normally, packs aren't that large.
Vendetta: Sometimes, shape-shifters want revenge. And when they want revenge, they mark the things they are going to kill (or have already) with a spiral shape.
The Hunters: Designed to kill all shape-shifters, they live by a code: We hunt those who hunt us. So, it means that they will kill any shape-shifter that they have evidence has killed a human. The thing is, not all hunters live by the code.
The Killer Shape-shifter: This is the shape-shifter that has been going around killing people at random (at least, that's what the hunters think). No one knows who it is, not even the person that is it. It seems as if the creature doesn't know that it's an abomination. This creature has glowing yellow eyes that are slit, sharp and translucent claws, and it's skin (well, scales really) is a light blue and green. It has rows and rows of razor sharp teeth, and a long tail. This creature always slices it's prey behind the neck to paralyze it from the neck down. Then, to kill the prey, it uses it's claws to slice from the waist up, effectively slicing through the lungs and ribs, killing instantly. But it doesn't eat it's prey. Killing may be it's only purpose.
Here's what the creature looks like:
If you have any questions, let me know, and I will add them to this list.