It is not possible that the blood of bulls and goats could take away sins (Heb 10:4).
Animal sacrifices are no longer needed because Christ’s sacrifice cleanses us completely from all guilt and sin – unlike the blood of animals that was a reminder of sin’s penalty and could never take away our sins.
(Heb10:11. And every Priest standeth daily ministering and offering often times the same sacrifices which can never take away sins).
The Lord has provided Himself a final and lasting burnt offering for us.