After a trip to the vet, Barkley is now free of the last staple from his neutering operation. Taking it out was definitely a non-trivial operation too. This last one managed to get crimped around some skin at one end, and required some extra bending and a big yank to remove it. Barkley tolerated it pretty well, although I know he wasn't enjoying it. It was a big honkin' staple too. Even the vet was was surprised and commented that it wasn't the usual skin staple that would normally be used.
It'll be a couple more days before Barkley can head out to the dog park while the area finishes healing. Looking forward to that day. It can't come a moment too soon.