I'm working on populating a new starter playfield I've designed and the current version I have has a lot of animal/mob spawns from passive dino's to wandering Talon. When I do the command ents I notice they all use ID numbers, which makes me think about how they work. When the planet is generated are all the mobs spawned in at that time or do they simply get generated when the player enters the biome? Is there a danger of having too many mobs causing a lack of id numbers? If so is there a way I can check this? Hopefully this post makes sense to folks!