Naturally, asymmetries can be found in humans as well as horses. When it comes to horses, the typical forms of structural asymmetry are in bone size, muscular development and hoof dimensions. It has been noted by Sarah Jane Hobbs, et al, in their recently-published study that about 5% of Dutch Warmbloods have uneven dorsal hoof wall angles in the front limbs. The development of this unevenness can often be attributed to horses favoring one side or the other, often termed sidedness.

The importance of keeping horses' front feet even has been highlighted in fresh research.

Like most standardbred farriers, Terry Burger pays close attention to hoof angles and toe lengths when shoeing trotters and pacers.