I'm sorry to hear your son is still not feeling well - just be careful of your hand while tending the bunnies!
Regarding the difference between sutures and staples, a lot has to do with where they are required. If the wound/incision is over muscles which need to be used/stretched, I don't like the idea of staples. For scalp wounds or in places that won't be stretched and/or twisted once healed, I think staples are fine, but then I'm old fashioned and they didn't exist back in my day.
When my previous dog was attacked by a much larger one in my front yard, a few years back, ending up with a nasty puncture wound on the top of her shoulder, my vet sent his assistant to come and close it [I had already cleaned it out with hydrogen peroxide and poviodine but had no means of closing it], she stapled it. As it was only a piece of skin that was missing, and a dog's skin is much looser over the muscle, staples were was fine. My only problem was that I'd never been taught how to remove staples, and I didn't feel it necessary for her to come out from town again to remove them. So she asked if I had embroidery scissors and explained how to use them to remove the staples.
Surprising how many uses those little scissors have!
