A future updat should feature this stuff(comment for suggestions)(HIGHLITED TEXT is for boss mobs or special things)

Red=boss mob

Yellow=Special Thing

Green=Very deadly place and very special

Black Death:Spawns once per world but once their youll never live again....

• Mobs
  
• Flying birds(can land on water and eat fish)
  
• Fish(swim around and used for fishing)
  
• Red Dragon(Overworld version of the Enderdragon except less deadly,doesnt destroy everything and found on Dragon Caves or Castles)
  
• Dwarves(habitate villages and tree forts)
  
• Kraken(boss of the deep waters but underneath deeper there could be more.....)
  
• Shark(aggressive water animal)
  
• Frogs(hop around jungle and swamp biomes and move around on lilly pads)
  
• Peguins(habitate icebergs and artic regions)
  
• Horses(ride on them and use bow and sword while mounted on them)
  
• Spartans(command them to protect your creations or attack hostile mobs in large numbers)
  
• Werewolf(live in castles and if you get bitten you turn into one,can climb up walls like spiders,very rare spawn)
  
• Eagle(used as an scout to scout out an area in front of you but need to be fed cooked fish)
  
• Sprite(a fairly-like star creature that flies around making giant mushrooms and Mushroom Villages,neutral mob)
  
• Herobrine(Only deadly if on Hard difficulty,but will allways be watching you until the day comes when he unleahses hell on Mincraftia.
  

Structures Castles(wherewolves and spartans spawn here) Dragon Cave(Red Dreagon can spawn here and also contains a lot of treasure) Underground Kingdom(A place that get inhabitated by Dwarves and Sprites,contains heaps of treasure,it;s basically an fairy-like NPC Village) Mushroom NPC Village(Dwarves and Sprites likee in mushrooms literry mush-rooms) Tree Forts(tree forts are massive fortifications on a group of trees normally spawning in jungle biomes,they have bridges leading to little tree huts the more bridges and torches everywhere) Biomes and Worlds Dreamworld:A world that you can teleport to from your bed when sleeping,the world contains Mushroom NPC Villages,Sprites,Dwarves,Underground Kingdoms,Tree Forts,Werewolves and Red Dragons. Prehistoric Water World:One of the deepes places in Minecraftia Megalodon's ,Liopluerodon's and Krakens would spawn here (extremely dangerous place)