from the 19th century that I found for sale on a site
called Rare Maps and Books
Shown above is "The Book of Laughter" from 1850 and "Happy Little People" from 1898 - both make use of animals and humor.
Also, "Jimmy Sliderlegs" by Heinrich Hoffmann, 1890, which is actually the same book as "Slovenly Peter" (my fav) with a different cover. Nice drawings and typefaces.