Knarls are a fictional species featured in the Harry Potter series.
Knarls resemble hedgehogs in every way, except for their innate magic. Because of it, knarls have a higher intelligence than normal hedgehogs. Because of this, where a hedgehog will gladly eat food left in its vicinity by a human, a knarl will suspect a trap and ignore the offering. Because of their magic, knarls' bodies contain many ingredients useful in brewing magic potions, such as their quills.