Children Of The Moon

The children of the moon are creatures similar to the traditional werewolves of myth. They Phase, or change forms, in response to the cycles of the moon. In their changed form, they do not entirely resemble actual wolves: their forelegs are more powerful than their hind legs and their still have usable hands with opposable thumbs. in addition, their stance is more upright, making their movement somewhat apelike, rather than entirely canine.

Children of the moon change form only at night, and during the fullest phase of the moon. While in their werewolf form, children of the moon are not aware of their human selves; they are feral rather than rational. 

Usually, they run alone, or with one companion of opposite gender. children of the moon cannot breed in their animal form; they can spread their species only by infecting other humans through bite. Infected humans who have children do not pass their abilities to their offspring.

In their animal form, children of the moon have heightened strength and speed that makes them both deadly and difficult to kill; contrary to the legend, these werewolves cannot be killed with a silver bullet, nor does silver repel them. Their amplified abilities make them capable of destroying a lone vampire; however, the vampire has the advantage due to the fact that he retains his logic and intelligence. One advantage the werewolf has, in both human and animal for is immunity to vampire venom, both the trans-formative properties and pain-producing properties. 

Because vampires and children of the moon share the same food source and because each is an exception to the others near indestructibility, they are natural enemies. Over time, however, the vampires have hunted the once populous werewolves into near extinction. 

In the Twilight Saga, Caius the Volturi had an encounter in the past with these creatures and vowed to hunt them all down, thus his interest in the "wolf pack" with whom Carlisle has a treaty.