Logan patiently palmed his face once and nodded at the question. He pulled the pen he had brought from out of his pocket and handed it to Karr too. He was thoroughly ignoring all the smells assaulting his sensitive nostrils. He might suggest someone set fire to the room after Karr left rather than trying to clean it, he thought with some smattering of humor, the little left him. He watched Karr sign and finally had to reach up and wrap his hand around the scruff of Karr's neck, squeezing and massaging it for a moment. It was the closest Karr was going to get to a hug. He finally let go and patted his back a few times, not gently.
"Not from this animal, ya can't. I know what yer gonna say!" he added, raising his voice to interrupt any objections. "And ya can't!"
"That fucking animal declared a blood feud on me even before we was mutants. Took my eye and my leg back then. He was already a savage sociopath, a mean as a snake sonumbitch who'd left a trail of dead behind him the length of the border before he had any powers, do you understand? After the Flare, he became a feral like us. Like me, he heals almost instantly from any wound. He's built like a damn bear and is fast as a panther. Have you heard the name Sabretooth?"