I love minecraft but one thing...

As you would expect, I LOVE minecraft but I have a few issues Id like to address, 1.when I have a horse that I tamed, I try to ride the horse, but SOMETIMES my horse dies, I dont even touch it ?,2.when I put a saddle on my horse it gets hurt, again I NEVER TOUCHED IT ??

Pinkeydie about Minecraft: Pocket Edition, v1.1.4