 The horse (differently from the specie's walking pattern) is portrayed while raising both left legs.It is a large and massive animal, inspired by the head of the ancient "Riccardi Horse" and to Donatello's "Equestrian statue of Gattamelata", a prototype of Renaissance equestrian statues.Andrea del Castagno had studied this earlier statue through drawings, never visiting its location in the city of Padua in Veneto.