Image credit The Scholar's Resource, here. Espirit de Baculard d'Armand (or in English, The Son of Francois Thomas de Baculard d'Armand), Jean-Baptiste Greuze, 1776, oil on oval canvas, held by Musee des Beaux-Arts, Troyes, France.
Zuffi observes, on the art of this period:
The cat faced up to this age of revolution and change with its customary nonchalance and proverbial adaptability.
In other words, tell me when it's over, but in the meantime, keep on petting me or I'll get even more annoyed than I am now....