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We’ve all heard about the human obesity problem, which may be spreading to pets, too, but now a study at Virginia Tech has revealed that horses are getting fat, too. An evaluation of 114 farms found that 51 percent of horses were obese or overweight.

The added pounds could make them vulnerable to excess insulin and a serious problem known as laminitis, which makes them, well, lame. It leads to a breakdown of the bond between hoof and bone, and can be incredibly painful for the horse.

As for the cause, clearly burgers, fries and fructose-laden soft drinks aren’t the only things that can lead to obesity. The horses in this study were just grazing in the pasture. For more details on how this problem may have arisen, read here.

Via Newswise