Mooshroom

Mooshrooms are cow-like mobs that spawn in the Mushroom Biome. They are covered with red mushroom growths and have 2 mushrooms on their body and one on their head.

Uses
Mooshrooms can be sheared for 2-5 red mushrooms, which turns them back into normal cows. If killed, they drop leather and raw beef like normal cows do. Mooshrooms can be milked with a bucket like a normal cow, and can be "milked" with an empty bowl to obtain a bowl of Mushroom Stew.

Behavior
Mooshrooms roam the Overworld Mushroom biome and occasionally other biomes in herds of 4—8. Mooshrooms make no attempt to stay out of water, and will bob up and down to stay afloat. They are extremely aware of cliffs, and will not jump off on purpose unless pushed or attacked. Upon reloading a map a Mooshroom has a chance to respawn on the other side of a fence to which it started.

Breeding
All passive mobs (Excluding squids and villagers) can be bred using Wheat. Breeding a mooshroom with another mooshroom will make a baby mooshroom, but breeding a regular cow with a mooshroom may make a regular cow or a mooshroom, which is chosen randomly.

History
Mooshrooms were added in 1.0.0 and were introduced in the Beta 1.9 Pre-release 1 update. When first introduced, Mooshrooms solely inhabited the Mushroom biome, but since Beta 1.9 Pre-release 4 may spawn in other biomes as well. They also could not be milked with a bucket like regular cows can, but this was fixed in later updates.

Bugs

 * On SMP when a Mooshroom is sheared, a server-side cow spawns, as well as a client-side cow that spawns for the player who sheared the Mooshroom. The same thing also happens to the dropped resources as a result of shearing.
 * As of 1.9 Pre-release 5, in SMP when a baby mooshroom is sheared, it turns into two normal cows and the two parent mooshrooms stop following them.
 * When a Mooshroom is sheared after it has already bred once, it can be bred again immediately.
 * Mooshrooms may spawn in non-mushroom biomes as well. It is currently unknown whether this is a bug or not.
 * In 1.0.0, right clicking on a Mooshroom with more than one bowl equipped will turn the whole stack into just one bowl of Mushroom Stew.

Trivia

 * The Mooshroom's name is a portmanteau of "moo," the sound Cows make, and "mushroom."
 * In the Beta 1.9 Pre-release mobs folder in the minecraft.jar, Mooshroom's are referred to as redcows, most likely because their texture is mainly a red color shift of the cow texture. Also, Mooshrooms are referred to as mushroomcows as its entity ID.
 * When a Mooshroom transforms into a normal Cow by shearing, it emits smoke particles.
 * There are only red mushrooms on mooshrooms, not brown ones.
 * When sheared, mooshrooms drop red mushrooms and not brown mushrooms but one can "milk" a Mooshroom with a bowl to obtain mushroom stew. (Which needs both red mushrooms and brown mushrooms to create normally.)
 * Mooshrooms are considered the most resourceful mob in Minecraft: They can be "milked" with a bowl for mushroom stew and also can be milked with a Bucket for Milk if you want to bake a cake. You can shear a Mooshroom with shears, when you do this the Mooshroom will convert to a normal cow, but you will also get 2-5 red mushrooms; and when you finally kill the cow you can get 1-3 pieces of raw beef (or, if you set the cow on fire and it dies, you can even get already cooked steak), and you will also receive up to 2 pieces of leather for armor. This is a total of at least 12 items that can be directly obtained from one Mooshroom and Cow.