Image credit here. The Wedding at Cana, Paolo Veronese, c. 1562, Oil on canvas, 22' x 33' (that's BIG!), held by the Louvre, Paris.
And the close-up of the cat in the right foreground:
A bit hard to see due to the pixillation, but the gray cat is, as Zuffi points out:
...performing a sort of somersault next to one of the pitchers in which water has been transformed miractulously in to excellnt wine.
Aha, so that's the explanation!
Zuffi makes an interesting observation: