On Minecraft, I was on my mom's world, YES I KNOW!! My mom plays Minecraft. Ask my followers. Anyways, we built a castle out of dirt. Now your thinking, WHY OUT OF DIRT?! We didn't know you can craft on MineCRAFT!! We didn't know how. But it was later changed to cobblestone. At that time, we also didn't know how to plant wheat. We wanted a cow inside the castle. So we did it the hard way. Pushing the cow. It took like 15 minutes. My mom, my sister, and me, were pushing the cow. It was a long and difficult time of pushing.
Moral to the story: Use wheat or a lead to get cows quicker.