He winces slightly at the rip (that had been a nice fleece, he's sad to see it go) and watches Ianto pull the fabric -- warily glancing at his arm once it's done.

"Right," he says, then glances at his good arm as Ianto begins to ease it off. "Okay. So -- do you have a first aid kit with you? If not there should be some bandages and antiseptic in my bag. You'll probably want some water to rinse it too. We'll need to make sure there's no -- bits of animal hair or fleece or anything in it. You'll want it to bleed a little too, make sure it's flushing itself."

Painkillers, he thinks distantly, will eventually be something he wants too. He takes a deep breath as he shrugs his good arm free while Ianto pulls then glances between the other one and his bag. Do they have tetanus here? The thought makes him wince slightly. Maybe they have some alien variant.