License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Karel Dujardin. Four goats; at the back a nanny goat lies on the ground, in the middle a billy goat stands, in the front two kids lie on the ground, a fence and tree beyond, ca. 1641–78. The Metropolitan Museum of Art.