Bat Pet

The Bat Pet is a craftable Pet unlocked at. To craft it, it requires 64 Enchanted Brown Mushrooms and an Enchanted Egg or a Super Enchanted Egg. It reveals its Rarity after crafting it, like most pets. This pet is highly recommended if the player wants to increase as it can provide up to a +55 boost in it during the night but only +5 during the day.

It is also highly recommended for the Spooky Festival as its Candy Lover ability increases the chance of mobs dropping candy for up to 10% at ; 15% at and ; and 20% at,  and. At and  rarity, its Wings of Steel ability will increase the damage dealt to Spooky Mobs by up to 50%. Bat Person Armor is commonly paired with this pet to maximize the chance of candy dropping.

A Vampire Fang is required by Kat to upgrade the Bat Pet from to, adding up to 5  as well as a new perk,. This new perk is highly recommended for fishing right before and after the Spooky Festival as it increases the chance for fishing spooky Sea Creatures during the event by 25%. The rarity of this pet requires the same amount of experience to reach Level 100 as the  rarity.

Trivia

 * This is the first and one of the few pets that can be upgraded to rarity, with the others being the Jerry Pet, the Enderman Pet, the Flying Fish Pet and the Endermite Pet.
 * Before the 0.9.9 Update, the rarity of this pet reduced Grappling Hook cooldown, which was negated by the full set bonus of Bat Person Armor, as it completely removes grappling hook cooldown. Now, the increased damage from the  rarity of this pet is essential to getting high scores in the Spooky Festival.
 * Sea Creature Chance is only active when the pet is rarity.
 * The look/texture of this pet appears to be slightly lighter, if not identical to the Bat Artifact.
 * Since at level 100 it will increase only 50% damage against Spooky Mobs and every weapon deal 1 damage, it will only affects: Blast o' Lantern, Ghoul Buster and Pumpkin Launcher.

Trivia

 * Prior to version 0.18.3, the Bat Pet had to hold the Vampire Fang to be rarity.
 * Any Bat Pets still holding the item when the update released were instantly upgraded to and had its Vampire Fang removed.