What is the movie called?

I remember watching a movie when I was a kid, where a horse told the
story about a boy, who helped, raised and supported him in everything
when the horse was abused my people. It was a black horse as far as I
can remember and I think it was set in either Western part of USA or
South Africa, I don't know.

Can anyone help me out, please?

-Thanks in advance
It's not Black Beauty, any ideas guys? =/