http://www.animalaid.org.uk/h/n/CAMPAIGNS/horse/
http://www.peta.org/issues/Ani...ption-and-death.aspx
I have lots of stuff relating to horse racing and undercover investigations which document appalling cruelty in the training yards but I can't get to it at the moment but I know that (for example) horses were beaten severely the first time they had blinkers put on so that in future they would be terrified every time they had blinkers put on and this would make them run faster as horses have a flight response to fear