Various art historians have suggested that the young Leonardo da Vinci, who was a member of Verrocchio's studio, may have painted some part of this work,[4] most likely the fish,[5] or the dog, supported by David Alan Brown, of the National Gallery, Washington. If so, this would be perhaps the first extant example of a painting with input by Leonardo.[6]
Possibly attributed to the young Leonardo da Vinci:
^Davies, Martin, The Earlier Italian Schools, National Gallery Catalogues, 556-557, 1961, reprinted 1986, ISBN0901791296. Suida in 1954 was apparently the first, covering both dog and fish.