Banquo and Lady Macduff are murdered and the Witches use animal blood as part of their potions. The play also finishes with real blood as Macbeth's severed head is displayed for all to see.

DOCTOR: And you think she’s asleep each time? SERVANT: I’m sure of it. She says things - but look! Here she comes! Watch! DOCTOR: Her eyes are open! SERVANT: But they do not see. DOCTOR: What ...