- boa constrictor – Harry accidentally released from the zoo, frightening Dudley half to death and resulting in a severe punishment from Uncle Vernon (PS2)
- sea serpent
- c.f. Serpensortia
Parseltongue (see) is the language of snakes (CS11).
Serpents are not necessarily evil, in fact many have them, as pets, but throughout time, they have been considered dark and magical. What is it about them that makes them so mysterious, and why did Rowling chose to include this element?
Also, draco means serpent in Greek.