question:  What is the implied name of the green creatures Horst and his gang are herding?
context: The ancient rule was sink or swim—swim in the miasma of a planet without spaceflight, or sink to utter destruction! I The horses and packs were loaded before we went aboard the scoutship. A planet is all right for a Mud-eater, but not for me. We have a place in the Ship like that—the Third Level—but it's only a thousand square miles and any time it gets on your nerves you can go up a level or down a level and be back in civilization. They don't let us grow for fourteen years and then kick us out to die. At our next landing, I grabbed Ninc's reins and cut Venie out smoothly. The ship lifted impersonally away from Ninc and me like a rising bird, and in just a moment it was gone. The third was to join forces, though not with that meatball One of the smartest moves in history was to include horses when they dropped the colonies. I say "they" because, while we did the actual dropping, the idea originated with the whole evac plan back on Earth. Considering how short a time it was in which the colonies were established, there was not time to set up industry, so they had to have draft animals. One of the eight, as well as the two that were being built then, went up with everything else in the Solar System in 2041. I don't know how many of those planets had animals that could have been substituted but, even if they had, they would have had to be domesticated from scratch. I rounded a tree-lined bend, ducking an overhanging branch, and pulled Ninc to a stop. There were five men on horseback herding a bunch of the ugliest creatures alive. I started Ninc up again and moved slowly to catch up with them. One of them had a string of packhorses on a line and he saw me and called to another who seemed to be the leader. That one wheeled his black horse and rode back toward me.
output:  Losels
options:  Free Birthers  Slims  Squat Plodders  Losels