Scent of the Beast
3 Point Merit
Your body exudes the scent of a predator, and any Cainite who is able to follow a scent will identify you as a beast (such as a wolf or a bear, or perhaps a large hunting dog) rather than as a Cainite. Cainites using Auspex are able to accurately identify your true nature with a successful Perception + Survival roll (difficulty of your character's Road rating or 7, whichever is higher). Animals likewise fear you as they would a large predator, but they do not feel the same fear of the supernatural from you that most Cainites instill.
For some reason, werewolves can usually detect a Cainite with this Merit for what she is with very little effort (Storyteller discretion - the Gift Sense Wyrm is only one such way).