How to test abstract classes with FluentValidation?

gistfile1.cs

// How can I create a CatValidator and EagleValidator that both use (inherit) an AnimalValidator?

public abstract class Animal
{
    public string Name { get; set; } 
}

public class Cat : Animal
{
    public string FurColour { get; set; }
}

public class Eagle : Animal
{
    public int FeatherCount { get; set; }
}