Make sure that there is one girl and one buy. Then buy one of the large dog houses (these are needed for cats also). Then use a sim that the animals like to click on one of the pets. Choose "Have baby with...". I am not sure if those are the exact words but they are along those lines. They will go to the house. If music plays when they are done, your pet is pregnant.
Put a male and a female (same animal) in together and let them do the rest.
Animals wont mate unless all their needs are satisfyed. Sometimes, they will mate and nothing will happen, it takes time.
Some animals can cross breed to create new animals. I think this mainly happens with User created animals however.
If you have Zoo Tycoon Endangered animals then there is an unlockable building called `Conservation breeding center` This will help breed endangered animals quicker.
Also, for an animal to mate then all their needs must be satisfied. This includes needs such as Privacy level, Hunger Level (etc...)
There is no Roller Coaster Tycoon 4 instead it will be Roller Coaster Tycoon 3D for the Nintentdo 3DS.
Every higher version of Roller Coaster Tycoon, has more rides, more scenery and many other things.
Platnum gives you access to Roller coaster tycoon 3, Roller coaster tycoon 3 WILD, and Roller coaster tycoon 3 soaked, If you just buy gold you cannot do anything on roller coaster tycoon 3 WILD like have a zoo and the WILD themed stuff such as deco's and rides.
Not that I know of but there is roller coaster tycoon 3.
All Roller Coaster Tycoon games are computer games
You can buy roller coaster tycoon for Mac. It's 49.95
Hire people to feed them
Nope
Roller Coaster Tycoon 3 is the latest one for a computer and also for Mac.
No, they are two entirely seperate games.
No, But they are coming out with Roller Coaster Tycoon 3D for The Nintendo 3DS May 22, 2012.
I think you will have to start from the beginning of your location in Roller coaster Tycoon 2.