werewolf

So I of course know the show has werewolves and vampires. I was thinking about what if it had hybrids (half wolfy/half fang gang). Being twice as powerful, would Buffy or any other characters be able to take one down. I know Buffy could probably slay one, who else would be strong enough to ?

Oz is a werewolf, we all know that, but when he transforms into his werewolf form, why can't he get out of the cage in the library? Whenever we see him going into the cage, no one ever locks it, Oz just closes the door. If the cage automatically locked whenever someone closed it, that wouldn't...