I'm not sure if the Black Stallion books are "girl" books or not--I'm a girl, but I was a tomboy all the way and I loved them. And they ARE about a boy, after all, so I should think they'd be ok to boys. I think all the other horse books were girly, like National Velvet and Misty of Chincoteague and My Friend Flicka and all of those, which might be why I didn't like them as well! smile