Donkeys have a primitive marking called a dorsal line, which is shaped like a cross and stretches down their backs and across their shoulders. Mules don't have this marking ...

In the horse family, donkeys, mules, and ponies can be differentiated from each other with their distinct features that can be noted under keen observation, they also offer traits and roles that ...

Beyond its use as a label for a very stubborn person, you might be aware the mule is a hybrid animal, related to horses and donkeys but properly belonging to neither species. A mule is a cross ...