They are described at the beginning of the standard as being built rather close to the ground . This is an altogether unsound picture and is often reflected in movement. Toplines are a problem both for breeders and judges - the Dogue de Bordeaux should never have a level topline but at the same time they should not display a weak sagging topline. The breed should be bum high, falling gently to a well marked wither. Eye colour often relates to coat colour with lighter colour dogs having a correspondingly lighter colour eye but they should still have an amber hue.
Eye colour can sometime be slow to develop.
Yellow eyes ruin the expression. The movie was both good and bad for the breed. It raised awareness of rare and otherwise unknown breed but the ensuing popularity resulted in a lot of indiscriminate breeding. Having only been recognized a decade ago, I think there are many judges who have seldomly read the standard. The Dogue de Bordeaux is a head breed, so look for a dog or bitch with a short muzzle, large voluminous head and the required wrinkle on both forehead and muzzle.