The Mount
Carol Emshwiller
 The first-person narrator, Charley, is a young man who like all humans is used as riding mounts (e.g. horses) for an alien race known as Hoots. Humans in Charley's world, a pastoral Earth, have existed in a master-slave relationship with the Hoots for centuries. The Hoots, who have no way to return to their home planet, maintain the natural systems that keep the world running. Escaped mounts like Charley's father, formerly the Guards' Mount known as Heron, lead assaults on the stables where humans are kept and seek to unify their own people against the Hoots. When Charley (mount name Smiley) meets his father for the first time (Heron and Merry Mary were mated and separated by the Hoots soon after Charley was born), he resists betraying either his Master, the Hoot heir apparent, or anything that might help the resisting humans because his life as a mount (breed Seattle) is the only one he's ever known.