In Minecraft, mobs spawn normally all the time. During the day, mobs spawn on grassy blocks with great frequency. Sheep, cows, pigs, and chickens are some of the mobs that are easy to find. At night, ...

You are going to need a lot of blocks for this build so you should better get to farming. As for the blocks themselves, you can pretty much use anything. Cobblestone and Wood are the most common ...