Whether one may benefit from the forbidden fat of the animal: Pesachim 27b
Rubbing the forbidden fat from the animal on one's skin isn't considered the usual fashion of use, to be in violation of the prohibition against benefit: Pesachim 24b
Even the hide is forbidden: Pesachim 22b
Disqualifying a murderous animal as an offering, even if there weren't two witnesses to its act: Temurah 28b
What happens if one discovers, after the court's verdict, that the animal was not guilty: Keritot 23b, 24a
If one gives an ox to someone to guard, it murders someone and becomes a shor haniskal and then the guardian returns it to the owner - has the guardian fulfilled the responsibility of returning it?: Ketuvot 34a