Restrict generic parameter on interface to subclass

The following is contrived, but bear with me:

interface Clonable<TSubClass>
{
    TSubClass Clone();
}

How can I restrict TSubClass to be of the implementing type?

i.e only let the implementor do this:

class Dog : Clonable<Dog>
{
    Dog Clone() 
    {
        ....
    }
}

Not this:

class BadDog : Clonable<Rabbit>
{
    Rabbit Clone()
    {
        ....
    }
}