The Civil War - but with dogs

Earlier this year I added a post to this blog entitled "The Civil War - but with cats." Well it turns out representing Civil War scenarios with animals is practically a genre. I recently found this image.

Here we see Ulysses S. Grant, represented by a bull-dog type canine challenging Jefferson Davis, represented by what looks like a whippet, wearing a planter's hat, to try to get his supplies, while Jeff only has cotton on his side.