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).
This means that the truck can carry up to 1000 pounds (453.5 kg) of cargo and passengers in the cab and bed. But wait a minute: If you take a look at the stats on modern half-ton pickups, you'll notice that their payload capacities exceed 1000 pounds (453.5 kg).