WEREWOLVES
The beginnings of the werewolf can be traced back to the twin brothers Romulus and Remus, the legendary founders of Rome. The twins had been abandoned at birth and taken in by a wolf-mother. She raised them and they suckled from her, giving them a strange disorder causing them to change into violent beasts under the touch of the silver full moon. Eventually this gene was spread further, and hence, the birth of the werewolf. One may become a werewolf by being bitten by an already turned wolf or by being born to a werewolf mother. During the waxing and waning of the moon, the urge to change will be great, but it is only during the full moon then they cannot fight the full change. Newly turned wolfs are ruled by the wild beast inside, but in time they can learn to be one with the wolf. This is only after intensive training. There has been a long uneasy rivalry between the wolves and vampires.
Werewolves age un-naturally slow. In fact, some of them live to be thousands of years old. The oldest living werewolf was said to be six thousand years old before being killed by a silver bullet. After being bitten or being born a wolf they will start to gradually almost stop aging or appear to. They stay young forever you might say, but they eventually do age. They however don't die of old age or there's no proven cases of it. They only die by accidents and silver.
Werewolves are ruled by the moon, naturally. They turn on the night of the first full moon, as soon as the sun has completely gone from the sky and stay in their wolf form until the sun has risen. Although the moon is only totally full one night it happens two nights after, as well. So in total they turn three times at the full moon.
STRENGTHS AND WEAKNESSES
When they are in wolf mode, they're twice as big and twice as fast as a regular wolf, and are very strong, with razor sharp teeth. they are able to change at will and by the full moon the change is imment.
Silver in any form is deadly to a werewolf - silver bullets are the deadliest to them. Silver will burn and slice through the skin and fur when it comes in contact with any part of the werewolf in wolf mode, but silver through the heart is an instant death.