This old caterpillar bulldozer looks a little sad, maybe because it is the start of a new week or because he wasn’t used today.
It is not certain who invented the first bulldozer, however, the bulldozer blade was in use before the invention of any tractor, which mules pushed. Course that meant the mules had to back up for the next push!
Sad Dozer
My left eye is a little sleeper than my right eye.