Different Mobs For Different Biomes

Okay, let's face it, Minecraft needs more mobs and everyone agrees. So, to make this interesting, maybe there would be different mobs for different biomes. So, here are my ideas: (Also, please note that these have a very low chance of getting into the game so don't get your hopes up. To see more about the mobs and biomes see: My giant epic mobs list!!!!! and My giant epic biomes list!!!!!!! which I will create sometime soon.)

Jungle

 * Pig=Tapir
 * Cow=Water Buffalo
 * Mooshroom=Zebu
 * Sheep=Gorilla
 * Chicken=Macaw
 * Ocelot (addition)=Panther
 * Bat=Monkey or Lemur, or both
 * Wolf=Tiger
 * Horse=Elephant
 * Squid=Manatee
 * Spider=Jungle Spider
 * Silverfish=Piranha
 * Zombie= Mapinguari
 * Skeleton=Jungle Warrior

Forest

 * Pig=Boar
 * Cow=Bison
 * Sheep=Sheep or possibly Goat
 * Chicken=Chicken and various birds
 * Ocelot=N/A
 * Bat=Bat, Crayfish, Lizard, Mice, Fireflies
 * Wolf=Wolf
 * Horse=Deer
 * Squid=Crayfish
 * Spider=Forest Spider
 * Silverfish=Maggot and Silverfish
 * Zombie=Zombie
 * Skeleton=N/A

Desert

 * Horse=Camel
 * Bat=Lizard
 * Spider=Scorpion
 * Silverfish=Maggot
 * Zombie=Mummy
 * Other=Sand Worm, Tortoise

Extreme Hills

 * Cow=Yak
 * Sheep=Mountain Goat
 * Chicken=Dodo
 * Ocelot=Snow Leopard
 * Bat=Bat
 * Wolf=Wolf
 * Silverfish=Mice or Rat, or both
 * Zombie=Yeti or Neanderthal

Tundra

 * Pig=Saiga Antelope
 * Cow=Musk Oxen
 * Sheep=Reindeer/Caribou
 * Chicken=Snow Goose
 * Wolf=Wolf
 * Ocelot=Lynx
 * Horse=Mammoth or Ground Sloth, or both
 * Bat=Bat
 * Mooshroom=Steppe Bison
 * Spider=Night Fury
 * Silverfish=Lemming
 * Zombie=Caveman
 * Enderman=Polar Enderman

Swamp
Feel free to edit.
 * Chicken=Duck