I don't have much neuro surgury experience myself. Let alone veterinary surgury which I asssume is a deep specialized feild of research medicine. However these seem like real bad numbers for any kind of skilled professional operation.

The skin infection is basical surgical skill that even the lowest level prelerations should have avoided. Brian bleeds are not uncommon but in context it really looks like it would be representing coner cutting. I don't known the stands for post operstive recovery care, I am sure the self mutilation isn't as wild as it sounds, but for the scope of the project there should have been sufficent vet techs on scene to prevent that.