User blog comment:G0LD3NF1RE/Dawnguard encounters issues with Playstation/@comment-5469022-20120902015437/@comment-3492791-20120902024043

Ok, allow me to explain.

When you enter Beastform, you have a timer until you have to change back. It starts at 2 1/2 minutes. You can extend that timer by eatting the hearts of the dead. Normally you can only eat people, and they will give you 1 extra minute. With dawnguard there is a perk that allows you to eat anything that isn't a robot, daedra, or undead. And you get 30 seconds for these. This means eatting dead people make you a werewolf for longer.

Also the vampire power bite attack is just a kill cam, It happens as often as they do.