Just keep hitting it with any item, even your hand, and it will eventually die. However, if you would like to hasten the process, use a tool such as a sword and the sheep will die quicker.
They kill sheep.
Kill a sheep or get some sheers
No, no mob will kill chicken but Players. The only neutral mobs that will kill passive mobs are wolfs --> sheep.
To make shears, just put to iron ingots in a diagonal fashion in any area of your crafting table. You can use these to shear sheep which not only doesn't kill the sheep but you get more wool for shearing the sheep than when you kill it.
Because there's nothing for them to drop currently besides wool.
no
Wheat!
To find pink sheep in Minecraft, you will need to go to a grassy area to look because peaceful mobs spawn on grass and I have found a pink sheep which is 1/100 likely to find pink sheep but Minecraft wiki doesn't tell you about pink sheep.<(0_0<)(>0_0)>
Give each sheep you want to breed wheat.
a few minecraft days
With hay.
First, you have to find sheep with wool. Then, use your dyes to dye its wool to a certain color. Then, kill it or shave it to get the wool.