Cowthulhu

Cowthulhu is a simple pre-hardmode boss, but he is quite difficult. He is summoned with the Mighty Moo at any time after Skeletron has been defeated. He is a large cow.

Summoning
The Mighty Moo can be crafted from 20 leather, and 20 bones. It will summon Cowthulhu at any time. Cowthulhu is very hard to beat, however.

In battle
Cowthulhu will attempt to dash at the player and jumps when they jump. He will summon Mighty Moos, smaller but faster versions of him with 500/1000 Hp. They will also rarely spawn in the wildlife once Cowthulhu is defeated. He will also shoot projectiles that resemble the word “Moo” at the player. These deal 42 damage. While dashing cowthulhu deals his expert mode damage/103 in expert mode. If Cowthulhu directly lands on the player’s head when he jumps he will deal 500 damage. At 80%/90% in expert mode HP, cowthulhu may begin to get faster and summon more Mighty Moos. Phase 2 starts only when Cowthulhu reaches 48%/55% in expert mode HP, and for that the player must be prepared mentally and physically.

Phase 2
In phase 2, the Player will get the Mooked effect for the rest of the battle - the word “Moo” begins to cover up their screen slowly. If it goes too bad the player will be unable to see anything. The player needs to kill Cowthulhu quickly. In expert mode he will begin to summon Flying Cows, which look like Mighty Moos but with wings. They will fly and shoot the word”Moo” out at the player. They have 250/500 HP. Cowthulhu becomes much faster and slightly stronger. He will begin to rarely do what is called a Super Dash, where he runs extremely fast at a player and is invulnerable. Super dashes also deal quite a lot of damage. He will now lock the player from flying, because he will super dash at them if they do that, however the player does not have wings yet unless they are modded or this wiki has something to do with it. Cowthulhu may begin to summon Mighty Moos faster at 20% HP, and in expert mode every fifth Moo will now be a agressive, fast, blast of fire that inflicts On Fire! and homes on you. At 10% HP Cowthulhu’s everything now becomes faster. This continues until you have killed cowthulhu. He will also superdash more and more until you have killed cowthulhu. When cowthulhu’s HP drops to 0 he will die.

Drops
The Mighty Moo staff(100%)

Moogic Book(50%) or The Moo Master(50%)

Leather(30-69)(100%)

In expert mode and above, The Moosician will spawn if a vacant house is available.

(Expert Mode Only) Treasure Bag(Cowthulhu)(100%)

(Expert Mode Only) Exstermoonator(10%)

(Expert Mode Only) Moorning Glory(100%)

Trivia
Cowthulhu is fought after Skeletron and before the Wall Of Flesh.

Cowthulhu is a pun on Cow and Cthulhu.

Exstermoonator is a pun on Exterminator and Moo.

Moorning Glory is a pun on morning glory and Moo.

Moogic book is a pun on magic book and Moo.