Eh, he'll live. Or rather, he can't exactly get any more dead and a bite like this is more of a nuisance than a real problem. Maybe Ianto was right, maybe he really does have a type — immortal men with dramatic coats and fake names, was it? Funny how no one saw this coming.
"I've been told I need to learn how to share!"
And with Jack slowing the raptor down he can catch up and head it off, making a grab for it's jaw to wrench the head to the side. Lizard skin is thick and tough to get through but if you find the soft spot on its throat you can do enough damage and that's what he intends to do. It feels good to bite again, even if raptors taste disgusting.