Need Help finding Animal Doentary Clip?

I'm doing a presentation and for the doentary section of my powerpoint, I was hoping of putting a movie with this little bull being attacked and dragged away by lions, and then crocodiles tried to steal it away from the lions. Before either one won, the Mom bull came back with the whole herd of bulls and together they chased away both the lions and the crocodiles and saved the little bull. I remember seeing this on tv and I thought it was pretty awesome but I don't know where to find it. can anyone help me?