Okay, apparently I didn't explain myself.
Cat attacks. Me, especially. The first time I had bruises that were literally black, and puncture wounds that bled for days. I couldn't walk for a couple of days without tears streaming down my face (he got my thighs).
When he gets like this, hissing and clawing and biting, the dog cowers in the corner, making herself as small as possible. If I wasn't there to take the brunt of his anger, I'm sure he'd scratch her to bits.
The cat won't get out of the dogs way. He specifically gets in her, and then my, way, and then takes his anger out on us very forcefully.
...I don't really understand. When she was a baby, and she'd play too rough, he'd pop her on the nose, claws in. He was gentle, but firm. Now he's insane.
Oh, and if I try to scruff the cat, which I CAN do, he just bends around and tries to bite or scratch. Its hard to hold him far enough away from me so I don't end up bloody, AGAIN.