Houyhnhnms are inhabitants of a place that is isolated from all other places due to which nobody from their territory has ever been able to travel anywhere in the world. Their appearance is like that of the horses of Gulliver's land but they are much more intelligent than actual horses and seemingly close to humans in that aspect. They are a calm, stable and reasonable race as Gulliver discovers when these horse-like creatures communicate with each other using neighing noises. They are also gentle and rescue Gulliver from the savage Yahoos but at the same time, they are only driven by logic and do not allow their emotions to rule them. They keep savage Yahoos as bonded labourers. They are however peaceful and live in a well-ordered society. They also have extremely efficient physiology and do not get sick. Gulliver comes to admire them for their calmness and well-structured society which is thoroughly governed by reason.