Question: Does Seth Green play Oz-Wolf as well as regular Oz, or is it someone different?
Chosen answer: In the episode Phases, Oz-Wolf was played by Keith Campbell, a stuntman who regularly doubles for Tom Cruise. I don't know about other episodes, but it seems unlikely that they'd choose not to use Seth Green in one episode, then change to using him to play the Oz-Wolf later on.
Question: Why is Anya scared of bunnies? Or do we never find out?
Answer: It goes back to when she was human, just before becoming a vengeance demon. She used to love bunnies, but I guess afterwards she always associated them with her boyfriend cheating on her, and her turning into a demon. This is shown in the season 7 episode 'Selfless'.
Chosen answer: If this is the bit I think it is, it's from the episode "Witch" - the person in the shot is actually Catherine Madison, the villain of the episode. The shot used in the title sequence is different from what's seen in the episode - possibly an alternate take.
Tailkinker ★