Also check for irregular wear on his teeth. The shoulder should have a good slope of about 45 degrees, which should be the same as the slope through the pastern and the hoof. The chest should not be too narrow, and the legs should be straight from the front, with the feet not turning in or out. The feet should be a pair, of equal size and the same shape. The heels should not collapse under the rest of the hoof, but should be able to give adequate support to the back of the foot.
Collapsed heels can predispose to navicular disease.
The back should not be too long, as this can cause weakness, and pain if the horse is not up to weight bearing. The girth should be deep, and the belly should not run up to the hindquarters like a greyhound s, as this will cause the girth to slip back. It is also not desirable to have the croup higher than the withers. A horse with noticably lower croup than withers is definitley worth looking at from a dressage piont of view. The hindlegs should be straight from behind, and from the side, a line dropped from the point of buttock should run down the back of the cannon bone, off the back of the fetlock, and meet the ground at a right angle.