I know mud if constantly in can cause hoof problems not to mention their skin from being wet all the time.
They also can't get sick from drinking water from buckets that havent been cleaned in a week but its sick when you can just wipe your finger on the bottom and get loads of gunk :X
Im also wondering is it a form of abuse to feed your horse a huge diet but don't ever work it. So it just sits and gets fat, can't that cause problem as well?
What do you guys think? Poor living conditions for your horse equal neglect?