Pics not working for me, idk if its cuz I'm on a phone or not.. Vet can help best as we all know. Idk how you can get the pic up tho. I had a rat bite my first ball ages ago gave him a cut that wasn't deep an healed on its own but that was a smaller shallow cut. You may wanna switch to something like paper towels until the cut is closed tho to keep substrate out of it an keep it clean. Not sure what ointments are best, sorry, but I know don't use ones with the pain killing or numbing agents in them. Can't think of anything else I hope you get it fixed tho!