Since I showed my 3 year old son the tree house and farm I had built in Minecraft, he has become a huge fan of the game also. At first I would play and he would watch, but now he has started playing himself. I've created a creative world for him and set the difficulty to peaceful. I have built a house and a little farm with wheat, cows, chickens, pigs and sheep. He loves playing farmer.
Unfortunately, as a farmer, he is not always being nice to his animals. He often punches the animals when they are in the way and then the animals die. I would like to be able to make the animals unkillable, because I don't like him killing defenseless animals.
Is there a mod or something that I can use to make the animals unkillable? I have tried searching Google, minecraftforum.net and gaming.se, but I haven't found anything useful yet.