Yes.
When killed, they drop 0-2 leather and 1-3 raw beef. However, if they are killed by fire, they drop 1-3 steak instead.
They also give you milk if you right-click them while holding an empty bucket while they are alive.
You kill cows for it, and they either drop food, or leather. You can't make leather out of anything else, you have to get it.
Kill cows. They will drop leather and you can make leather armour.
they don't drop anything but if you have bones and feed it to them you get them to fight for you Hope This Helped! :)
To break iron in Minecraft, you need a stone pickaxe or better. Anything lower and it will break and drop nothing.
by killing a cow, but not all cows drop leather. it may take a couple of cows to get one piece of leather
As of Pocket Edition 0.3.0, cows have been part of Minecraft Pocket Edition. If you have that version or above, then there should be cows.
You have to craft a pickaxe, or else stone won't drop anything.
To get cows to follow you in Minecraft PE you need to have wheat in your hand.
Grass
No, only wolfs, pigs, cows, chickens, sheep, and anything in the mo creeps and weirdos mod.
Magma Cubes, along with Slimes, are unique in Minecraft as when they die, they drop four smaller versions of themselves, and when they themselves die, they also drop four smaller versions of themselves. As well as this, Magma Cubes usually (not always) drop magma cream and experience orbs.
The pigs drop pork chops after they are grown. The pigs are there since the developers put other farm animals in the game.