Wool

"Wool was added to Minecraft a looooOOOong time ago - in June 2009 during the game's "Classic" development phase. It was originally called cloth and came in sixteen different colours that aren't quite the same colours we have today. Knowing that wool was originally cloth helps to explain why you use it to make paintings - I don't know anyone who paints on wool in the real world. Leather armour was also originally made using cloth and called cloth armour."

- Duncan Geere

Wool is a block obtained from sheep that can be dyed in any of the 16 different colors, which are white, orange, magenta, light blue, yellow, lime, pink, gray, light gray, cyan, purple, blue, brown, green, red, and black. Unlike certain blocks such as terracotta, there exists no undyed wool variant.

Natural generation
All wool colors (except magenta, pink, and purple) generate naturally as part of structures within woodland mansions.

White and yellow wool generate in shepherd houses, fletcher houses, and meeting points in plains villages.

White wool generates as woolen tents in pillager outposts.

Obtaining
Wool can be broken using any tool, but shears are the fastest tool to use.

Sheep
shears on an adult sheep yields 1-3 wool. If unshorn, sheep drop 1 wool upon death. The wool dropped is the same color as the sheep. The drop rates are not affected by the Fortune or Looting enchantments.

White, light gray, gray, black, brown, and (rarely) pink wool can be found naturally on sheep. Getting a sheep of a different color requires dyeing the sheep.

Trading
Shepherd villagers sell all colors of wool for a price of 1 or 2 emeralds for one wool as part of their tier 2 trades.

Apprentice-level Shepherd villagers have a 50% chance to sell one colored wool for an emerald, giving each wool color a $1/32$ (3.125%) chance of being offered.

Apprentice-level Shepherd villagers have a $2/7$ chance of selling one or two colored wool for an emerald, giving each wool color a $1/56$ (roughly 1.786%) chance of being offered.

Usage
Wool blocks are weak, highly flammable, and offer little resistance against explosions. Their primary usage is as a decorative block.

Trading
Shepherd villagers buy 16 to 22 white wool for 1 emerald as part of their tier 1 trades.

Novice-level Shepherd villagers offer to buy 18 wool for an emerald, with the color being sold chosen randomly from white, gray, brown, or black.

Novice-level Shepherd villagers offer to buy 18 wool for an emerald, with the color being sold chosen randomly from white, gray, brown, or black. The villager has a $3/4$ chance of offering the trade again with a different color.

Note blocks
Wool blocks can be placed under note blocks to produce guitar sounds.‌

Crafting ingredient
Any color of wool or wood can be used for paintings but it has no effect on the product's final appearance.

Fuel
Wool can be used as fuel in furnaces, smelting 0.5 items per wool block.

ID
Java Edition:

Bedrock Edition:

Block data
In Bedrock Edition, wool uses the following data values:

Block states
In Bedrock Edition, wool use the following block states:

Trivia

 * $1/32$, the data values for wool and their respective dyes are the inverse of each other. This is also true for stained glass, terracotta, shulker boxes, beds, banners, concrete powder, and concrete.