Are u asking how to spawn witches? (well you go into creative and you look for a spawn egg and you will find a witch spawn egg) or are u asking how do they spawn? (Well they spawn at night) I hoped that helped! ~Magpie
Yes, wolves spawn even on peaceful mode.
No mobs will spawn on peaceful, you may hear noises but they will be effects even on peaceful. the only entities that spawn in peaceful (not including the nether or the end) are players and animals unless, in the end or nether.
monsters do not spawn from monster spawners in Peaceful mode. Peaceful mode prevents hostile mobs from spawning naturally and also from monster spawners, ensuring the game remains free from any hostile creatures.
Yes, apparently, they will teleport into your home. It has happened before, trust me- I'm in peaceful mode right now... and guess who's also there. The enderman. So yes, they do spawn in peaceful mode.
No. Witches were introduced in the latest development version of Minecraft which has not yet been given a full release as of September 2012. If anyone downloads version snapshot 12w38a, they can spawn Witches manually in Creative mode.
It does when its not in Peaceful mode i think
Witches can spawn in one of three ways:Naturally at night (recent update, lower chance of spawning)In Witch Huts (found in Swamp biomes)Through the use of a Witch spawn egg (creative mode only)
Get single player commands then type in spawn silver fish. Make sure it's not on peaceful.
Peaceful mode means that no monsters spawn, so there will be no Slimes.
You may have your difficulty set to Peaceful. Monsters will not spawn in Peaceful mode.
You probably have it on Peaceful Mode thats the only reason I can think of.