lol I'm not sure what to tell ya. The only time I've ever been afraid of a big animal is if it took off on me while I was on its back. But I have never heard of any horse or big animal purposly roll onto anyone lol. I always just think of them as 'gentle giants.' Which is pratically what they are. Hopefully you'll be able to work through your fear cause horse are the most beautiful animals! Tell us how it goes when you go over to see all the animals!