What is to be done with blood from animals and what can we learn from this?
Answer From The Annual Reading Schedule - Week 44 Notes For Deuteronomy: Blood from animals we are permitted to eat must be poured on the ground like water (Deuteronomy 12:16). We are not permitted to eat the blood. The fact that we are to "pour it on the ground like water" shows that the animal is slaughtered a specific way and that the blood is not to stay inside the animal. If blood sits around inside an animal after death it would start to congeal and not come out like water unless coming out at the time of death. This matches with Acts 15 which requires believers to not eat blood or animals that were strangled (i.e. where the blood was not poured out like water).