iterating on enum type

Possible Duplicate:
How do I enumerate an enum?

I don't know if it is possible to do what I want to do, but I think why not.

I have example enum:

public enum Animals {
    Cat,
    Dog,
    ...
}

What I want to do is to iterate on this enum. I want it work like that:

foreach( var type in Animals ) {
    Console.WriteLine( type.toString() );
}

and the output will be:

 Cat
 Dog

Is it possible? I don't want to put every item to an array, and then iterate, I want to iterate directly on this enum.