28. What is similar about Lethifolds and Dementors? (Hint: Think what is known about Dementors.)
From Quiz Ministry Classification XXXXX
Answer:
The only known way to repel them is a Patronus.
Dementors are creatures with human-like form that wear a dark cloak, giving them a wraith-like appearance. They affect the feelings of people around them by literally sucking the happiness out of them. Their most terrible attack, though, is the Dementor's Kiss, which, as Lupin explained to Harry during their private lessons in "Harry Potter and the Prisoner of Azkaban", steals the soul of a person and leaves behind their body, alive but empty.
A Lethifold looks like a "black cloak half an inch thick". It attacks unsuspecting humans when they are asleep and suffocates them before digesting them. As with Dementors, the only spell that can offer some protection against Lethifolds is the Patronus charm. However, Lethifolds are only found in areas with tropical climate, while Dementors prefer dark and cold regions (as described by Lupin to Harry after Gryffindor's defeat to Hufflepuff in the "Prisoner of Azkaban").