Why does my horse bite?

Horses have a herd hierarchy, always, no matter how many or how few in the herd and there is nothing you can do about it. This is their way of communicating and controlling and protecting the herd. It is a natural behavior As long as the bites are not causing serious injuries, just let them work it out. I have seen cases where the injury was too serious to allow them to be together. So, you have to monitor the situation and make the choice about the well being of your 16 year old horse. It rarely becomes really serious but I have seen it in my friend's herd (she has a very sweet old guy and there is a young whipper-snapper that is just too full of himself so they have to be separated). That said, the situation is unlikely to change on its own. The younger horse is just very dominant and is exerting his position, the little brat.

Horses will be horses and that's what they do. Some get along some don't. There is nothing you can do really. A little "bullying" is normal, as they will have a pecking order and your QH is obviously the leader. But if your Arab comes back in everyday with marks all over her, then you need to separate them. It's okay if she's at the bottom of the heard, but you don't want her to get hurt.

It's higher in the pecking order than the Arab. Not really anything you can do about it.

I actually have the same problem with my neighbors horses and my horse. My neighbor asked me if I wanted to have my horse in his big pasture with their horses, so I said sure. He has a couple horses :

1.) 5 yr old Quarter Horse mare

2.) Quarab Mare - About 10 yrs old

3.) Quarab TB colt - 8 month old

4.) Standardbred gelding - 16 yrs old

5.) Brown llama stud

The 5 yr old Quarter horse mare acts like she is all it. She will gallop and prace around trying to act like a princess. But really she is a evil horse. My 17 hh TB gelding tries to graze, lay down but she will come over and bite him, and I feel bad so now I moved him away with no other horses. =[ I wish he could be there, but she bites hard. So whenever my neighbor isn't there, I hit her a bit whenever she bites him.

Good Luck!