Mules are slightly smaller than their horse parent, and when they grow they share traits of both a donkey (the long ears), and the horse (color, tail, etc.). A Mule in the grass.
For example, a 2014 Ford F-150 is considered a half ton truck but most variants can carry a lot more than 1,000 pounds in the bed. Since these terms are probably not going away any time soon, it's best just to think of them as smaller, mediumest, and more than medium.. (Pause for laughter).
1 Larger and heavier trailers must be pulled by a medium-to heavy-duty truck, which can cost $20,000-$50,000 or more. 2  Towing a loaded trailer reduces the tow vehicle's fuel efficiency by at least a couple miles per gallon, and could cut it by as much as half (or more).