Jacques-Laurent Agasse was an animal and landscape painter from Switzerland.
Born at Geneva, Agasse studied in the public art school of that city. Before he turned twenty he went to Paris to study in veterinary school to make himself fully acquainted with the anatomy of horses and other animals. He seems to have subsequently returned to Switzerland. The Tübinger Morgenblatt says that "Agasse, the celebrated animal painter, now in England, owed his fortune to an accident. About eight years ago, he being then in Switzerland, a rich Englishman asked him to paint his favourite dog which had died. The Englishman was so pleased with his work that he took the painter to England with him."
Nagler says that he was one of the most celebrated animal painters at the end of the 18th and the beginning of the 19th century. In Johann Georg Meusel's Neue Miscellaneen, he compares Agasse and Wouwermans, wholly in favour of the former. In that partial article much is said of his extreme devotion to art, of his marvelous knowledge of anatomy, of his special fondness for the English racehorses, and his excellence in depicting them.