Anatomical features of hoof may change with improper shoeing, delay in trimming and shoeing, activities, such as show jumping etc. Balance of the hooves may change by its growth which should be fixed in trimming and shoeing. This study, was held in Mashhad on trimming and shoeing of the horses. Thirty healthy horses aged 9.5 years were selected. Photos were taken from lateral and solar sides of hooves using a scale, before and after trimming. Heels and toe angles, the length of heels and toes, the height of heel and toes, hoof length, width, middle hoof angel, side hoof angle were measured. Over 2880 measurements on 480 photos were done by using the scale in Image J software.The heel angel recorded as 35/8±73/49 degrees in forelimbs and 35/50±7/43 degrees in hind limbs which was higher than reported length. Toe angle in fore and hind limb recorded as 51.6 and 53 degrees respectively. Although toe degree in fore limbs recorded less than hind limbs as previous reports but its measurements in forelimbs recorded as 52.6 that is higher from previous standard reports. Toe angle in hind limbs recorded as 53.5 that is closed to previous standards. Similar toe angles in fore and hind limbs is not acceptable following hoof trimming. Lateral and medial angles in solar view of fore limbs recorded and 90 and 89.9 and in hind limbs 90.6 and 89.3 in lateral and medial angles in solar view. We didn’t find any similar study in Iran. No prominent difference in other measurements were recorded.

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