In Multiplayer on the 360, I was over at a friend's game a few weeks ago. My friend's friend was duplicating chickens for whatever odd reason. Before, during that day and a few days afterwards, Animal Mobs were spawning fine. Yet, about a week later animals did not spawn whatsoever. We haven't seen a single animal in weeks. We did the Chicken Egg thing yesterday where you can hatch them, but the chickens were only temporary. Only Monsters spawn when the difficulty is set from Easy to Hard.
So does the Duplication Glitch have to do with this? Does it effect the script for spawning Animal Mobs? If it's some sort of connection problem I wouldn't know. Our connections are fine, and even if there was a problem it should have resolved by now.