This article is about the Werewolf enemy. For the buff of the same name, see Werewolf (buff).
The Werewolf is a Hardmodeenemy that only spawns at night while a full moon is active, during which it is as common as Zombie. Werewolves can open doors and have a 12.5*1/8 (12.5%) chance to inflict the Bleedingdebuff. At close range, Werewolves attack the player by leaping or lunging, closing distances quickly to catch unwary players off-guard.
The Werewolf can drop the Moon Charm, which allows the player to transform into a Werewolf at night.
If forced to go through a 2-tile high space, it will stand with its arms down for a few seconds and then move away from the player.
The Werewolf will still attack the player even if the player has the Werewolf buff from the Moon Charm or its upgrades.
Werewolves can spawn on Blood Moons only if it is also a full moon, and without increased spawn rates.
The nights on which Werewolves will spawn can be tracked through the items that certain NPCs sell, as the Painter sells paintings based on the moon phase, and the Clothier will sell unique items specifically during a full moon. The inventories of the Dye Trader and Skeleton Merchant will also have unique items, though a Sextant or derived informational item provides this same information much more directly.
If under-powered on the night of a full moon Werewolves can be fought regardless using the same strategies one might use against early-game Zombies, such as boxing oneself into safety and opening a small hole to release projectiles from.
In common lore, the main weakness of werewolves is silver (e.g., Silver Bullets), but silver items in Terraria offer no particular benefit in dealing with them.
Werewolves in Terraria share the trait of roaming during a full moon with common-lore werewolves, however.
The Bestiary entry for the Werewolf: "Cursed by the moonlight, these menacing lupines were once human. Now, they feast on their loved ones instinctively."