This illustration is one of the less common type of postcards: a typical street scene in a town where the people are all replaced by cats.
No. 4741 Edition Max Künzli, Zurich 6
There is no description on the back of this card.
Among the odd elements of this image is the fact that the cat that has tripped the bread seller has done so with the leash from her pet dog, the only dog in the image. The dress styles and horse-drawn trolley point to the turn of the 20th century for the setting of the image.
The postcard likely dates from the 1940s.