Yes, but very rare!
To get eggs that spawn animals in Minecraft PE on Survival Mode pawn use the command /give.
you spawn with them, even in survival
yes if they set spawn in the nether, but not many do
You can't, they are only spawned naturally. You can, however, use a spawn egg in creative mode to spawn them.
You can't. There are two Minecraft demos that I know of: one on minecraft.net, and the PC Gamer demo. Both are locked in survival mode, and in survival mode there is no way to spawn mobs.
By either going into creative mode and getting a Spawn Egg, or by activating "Cheats" in Survival mode and using the command "/give (Minecraft Name) (Number) (ID Number for Spawn Egg/Name of Spawn Egg)"
Try looking in a plains biome, that's where they spawn the most.
yes, just how you would in survival. Additionally you can just spawn them in.
In Minecraft Classic, mobs can't spawn, so they can't exist naturally. If you play the Survival Test, and when mobs spawn there, you can save it and open it in creative mode so then the mobs can stay there. However, in Minecraft Creative Mode, mobs can spawn, but they can't hurt you because you have no healthbar.
open server.properties with notepad word ect and change spawn-monsters=true to spawn-monsters=false.
In creative there is a spawn egg for spawning a villager, but in survival you have to find a village, there its a lot of villagers walking around:)!
The only way to spawn herobrine in minecraft is to use mods as you cannot spawn him in vanilla minecraft.