There are a lot of ways for horses to lame themselves in the wild (fighting would be one of them). I saw a pretty lame Przewalski stallion in Mongolia *could have been from running over relatively rocky upland or a slip on grass or fighting or... Generally adult horses are too big to be eaten...
Not true...
'Almost three-quarters (74%) of the New Year honours are for local community, charity or voluntary work by the ordinary people doing extraordinary things highlighted in the Queens Christmas broadcast.'...
This is an absolute nightmare. RSPCA appealing for help.
http://www.cambridge-news.co.uk/news/cambridge-news/heartbreak-three-horses-killed-what-12361680
He sounds like he needs careful handling and retraining from a sensitive professional who looks after him fulltime.
Others say it's safest not to ride him but you still probably need to get him in from the field even if you're not exercising him. My only random tip for dealing with horses that...
The knock-on social/economic effects from 2010 were pretty dire and still on-going. Am thinking of the Mongolians and also the Przewalski projects there, especially the Gobi-based ones.
I thought social housing was something like the barns in this point-to-point yard:
http://www.horseandhound.co.uk/features/horses-loose-barns-lucky-onions-secrets-behind-champions-yard-605275
I've seen some happy looking domestic zebras (someone in the US was showjumping one recently. https://youtu.be/hhlOkEpvFgQ ) and also some tetchy, miserable-looking ones. I'm guessing that as with horses, their demeanour says plenty about their trainer, although horses probably put up with a lot...
Wild Horse Diaries by Lizzie Spender. All about taming a Brumby.
Fair Girls and Grey Horses – memoir by the Pullein-Thompson sisters.
Dark Horses and Black Beauties by Melissa Holbrooke-Pierson.
Fox in the Cupboard gets a vote from me too.
Talking of Horses by Monica Dickens.