Portret van Frederik de Vries

A young boy in late 16th-century attire leans against a massive spaniel while holding a bird of prey on his gloved hand. The duo stands before a gnarled tree in a detailed landscape that includes a distant tower and a harbor. The boy's direct gaze and the dog's patient posture emphasize a harmonious relationship between human and animal.

The work functions as an emblem of 'Simplicitas' (simplicity) and 'Fides' (loyalty/faith), themes central to the moral philosophy of the Dutch Renaissance. As a leading Haarlem Mannerist, Goltzius used such portraits to demonstrate the 'taming' of nature through virtue and education, a concept often discussed in the context of Neoplatonic upbringing.