Generic parent Collection split to child collections

Question

I have a list of IAnimal

List<IAnimal> Animals

Inside this list I have 3 different Animal

1. Cat 5 objects
2. Dog 10 objects
3. Cow 3 objects

How can I generate 3 different lists of the sub Animal type?

Result should be

1. List<Cat> Cats contains 5 objects
2. List<Dog> Dogs contains 10 objects
3. List<Cow> Cows contains 3 objects

I don't mind of using different collection type then List. IEnumerable or any others?

Answer 1

LINQ makes this simple:

var cats = animals.OfType<Cat>().ToList();
var dogs = animals.OfType<Dog>().ToList();
var cows = animals.OfType<Cow>().ToList();