That looks so painful! Are you sure it's not the incision line where they cut into his testicles? It is a bit hard to make out in the picture, but it looks so uncomfortable. I agree E-collar time, and ointment to help heal it quicker, and tell those vet techs to get with it! Looks like he was shaved down with a rusty razor. Glad you have pain meds on hand, as it sounds like Rosco needs it more than Abigail right now.