Re: Pad Injury
For a superficial wound, I clean it, apply neosporin and put a sock on. I especially like ankle-height socks (like, tennis socks). They're narrower and stay on better.
After I put the sock on, I use packing tape (that you would use for boxes) and wrap the sock ABOVE the pad, starting just below the wrist and working up. Snug, but not too tight. Don't wrap the pad because the wound needs to breathe. The tape does two things -- it helps keep the sock on, and it's crinkly, so if your pup is messing with it, you'll hear it and can either "eh-eh" him or redirect.
After my dog goes outside (it's always wet here), I cut off the tape, remove the sock, dry the foot and put on a new sock. Yeah, I do that several times a day. A wet sock will impede healing and might make things worse (trapping bacteria), so if you can't change it immediately, don't bother with a sock at all.