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Why aren’t there any passive mobs spawning in my single player world?
I've noticed that on Minecraft multiplayer servers (since mob breeding was introduced), there tends to be a large "dead zone" around spawn, due to over-harvesting of mobs by players. Do passive mobs (e. g., sheep, cows, pigs, chickens) respawn or breed to make up for the population loss? I've noticed that ocelots appear to increase in number over time, but I still want to know whether the same applies to the other passive mobs.