I know something that will help the ruptures abcess heal nicely. We had to do it with Arthur after Katie beat the crap out of him. Tho, we had to take him to the vet to have the abcess lanced so all the puss and stuff could be released. Fun..

Anyway, if you get a washcloth (make sure it's an old one, it can get kinda messy!) and wet it with hot water, hot as you can handle, then hold it over the wound til it cools. Repeat this a couple times, if he'll let you. Basically, you're making a heat pack. The heat helps it heal well.

Silly PB! Didn't your mama ever tell you to just walk away from a fight?