If your horses ears are slightly tilted backwords what does it mean?

When a horse puts both ears backward he is most likely upset or annoyed with something. This doesn't necessarily mean he will do anything bad, but use caution when approaching a horse with his ears back. He may try to kick or even bite if he feels threatened. If you are riding a horse with his ears back, try to calm him down by patting his neck. If just one ear is slanted back, he is probably trying to figure out your riding cues.