It is the equine hybrid resulting from crossing a donkey and a horse. In Colombia is a very strong horse. Female of the Mule. Horse carrying heavy load. In Colombia is also a way to call a tractor-trailer or tractor. Truck large-tonnage and multi-axis. Very strong and resistant, colloquially face, head. Also called Mule the person carrying hidden drugs.
Infertile. Sterile. Mule. It refers to a woman who cannot for some reason. Give birth to children. (But not that, not prevented performed as an excellent mother ) The Mule does not stop, because it is the cross between donkey and Mare. Or between horse and donkey. (Among those matings, born mules. And the so-called males. That it does not pollinate )Both animals, only serve very well for work, either shooting, riding, and load.Inexplicably, they have more resistance.