|"There are plenty of eye-witness accounts. Just because you're so narrow-minded you need to have everything shoved under your nose before you–"
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Nocturnal beasts are a class of beasts which are known for sleeping in the day as opposed to night-time. Professor Remus Lupin planned to review this category of beast with his third year class in mid-1993, although Professor Severus Snape started the unit early by teaching them about werewolves when substituting as Defence Against the Dark Arts teacher.
- Harry Potter and the Prisoner of Azkaban (film) (First mentioned) (Mentioned only)