Van de Velde frequently reused drawings of animals made from life. Both the goat and the kid in this painting appear in other works by the artist. It is possible that the landscape background is by another artist, perhaps Frederick de Moucheron, whose work is also represented in the National Gallery's Collection. The background was certainly painted after the animals as an unpainted outline around them is visible.
The National Gallery, Trafalgar Square, London WC2N 5DN