Here is a list of five biomes that spawn rare Minecraft mobs ... This also made the Creaking mob rarer, as not all Pale Gardens will have a creaking heart that spawns the mob at night.

Even after all this time, we still can't get enough Minecraft and there's still more to make of the original game. If you're looking to populate it with more mobs to pump more life into it ...

While this tree-like mob is very distinctive compared to Minecraft’s other creatures ... made by accident when a glitched Pig had all four of its legs appear at the end of its body standing ...