well at this moment 1/12/2013
there are
Pigs
Sheep
Cows
Chickens
Wolves
Squids
Ocelots aka cats
Villagers
I am not sure if Snow Golems and Iron Golems count but might as well mention them
All the normal animals like chickens and cows can be found as well as ocelots in a jungle which can be tamed to be as cats.
minecraft classic and minecraft beta singeplayer, all on minecraft.net
no
they randomly spawn all over.
Many people all around the world play Minecraft. To find friends to play with, you should create a Minecraft blog.
Yes, there are animals in creative mode.
You can put animals in minecarts in the minecraft pocket edition by using the AR cheats.
Find it on the minecraft forums Download the data import all of the things in to a new world SKYBLOCK TIME
This is not the place to find out about Minecraft. Look at the Minecraft Wiki to find out about the game in general.
You can find it at the minecraft skindex
Carrots on a fishing rod and all animals will follow you if you have wheat
20 minutes, the same as all baby animals.