Well, I tried to put a bandage and some vet wrap on Twyla's wound, but a few minutes later she managed to move the bandage and uncover the wound, so I took it off. Looking at it in the light it doesn't look like it's too deep. It's on the back of her front right leg, so she can't lick it easily, which is good at least. I guess I will see how it looks tomorrow morning and put some ointment on it. I'm such a hovering greyhound dad.