The day after my female, Ramsey, had her spay...during the night while we slept she elected to remove ALL her stitches. I discovered it the next morning. Since I was worried it could pop open...I took her to the emergency's vet. They examined it, applied a liquid bandage over it...and said it was fine.
You might want to take him back to vet for their opinion.
__________________ Deb, Reese, Reggie, Frazier, Libby, Sidney, & Bodie |