What reaction do the Houyhnhnms have towards Gulliver?

The Houyhnhnms perceive Gulliver as a Yahoo, which is significant to the overall themes and social commentary presented in "Gulliver's Travels." The Houyhnhnms are a race of rational and intelligent horses that live by principles of reason and virtue, contrasting sharply with the Yahoos, who are depicted as brutish and animalistic creatures representing the worst of humanity.

Upon Gulliver's arrival, despite his human appearance and the semblance of intelligence, the Houyhnhnms view him through their own lens of rationality. They observe that, unlike them, Gulliver is prone to many of the vices and flaws associated with the Yahoos. This leads to a critical moment in the narrative where Gulliver's identity is challenged; he finds himself at odds with the character of the beings who embody reason and morality.

The perception of Gulliver as a Yahoo encapsulates a profound commentary on human nature and the capacity for rational thought versus the inherent baseness seen in humanity. This moment serves as a pivotal exploration of self-identity and societal norms, allowing readers to reflect on the qualities that define civilization.