Dog and cart farm snapshot

Here's an interesting Bluffton farm photo from the 1920s-early-1930s.

It's a farm boy riding a cart pulled by a dog, as the boy holds another dog on his lap.

The writing on the back of the snapshot reads: Levi Althaus's son, John, and his dogs, Tootsie and Puger (spelling?).

John is 3 in this photo - the same age as the dog, described as a "very fine" collie. (Collection of Fred Steiner)