|"I show not your face but your heart's desire."|
The venom of the Streeler is orange in colour and is so venomous that it shrivels and burns all vegetation over which it passes. Streelers secrete this venom in a trail behind them. This venom is one of the few substances with the ability to kill Horklumps.
- Fantastic Beasts and Where to Find Them (First mentioned)
- Harry Potter and the Philosopher's Stone (video game) (First appearance)
- Harry Potter and the Chamber of Secrets (video game)