Logan was fairly shocked in turn, but he could feel the hairs on his arms and the back of his neck bristle even before Karr opened his mouth to yell at him. Something was definitely not right with him. "What the hell happened to you!?" he began to snarl, and barely had time to whip his whole body backwards, tipping over the chair when Karr punched him. Even then he caught a glancing blow to the chin that made his teeth snap together hard. There wasn't a lot of room to maneuver, but luckily Logan wasn't that big. He rolled and got up into a crouch, batting away the undisciplined clawing as he built up to a massive tooth baring scowl.
"Now you wait a hot minute, now, you little shit! Where the fuck do ya get off talking to me like that!?" he growled menacingly at his son. Oh, he loved him like only a father could, but that wasn't going to stop Logan from feeding Karr his own teeth very soon. He aimed for an opening in Karr's disorganized attack, and shoved the boy away from him with all his might. He wasn't ashamed to realize that he hoped he put the damn fool boy through a wall to see if he'd calm down, even though he wasn't quite as strong as that. But what he really needed was to put some distance between him and those wicked poison claws of Karr's. If he got him jacked up with as much rage as he was carrying, Logan was likely to really take Karr apart and, no matter how pissed off he was right now, he didn't want that.