Final answer:
The Houyhnhnms in Gulliver's Travels are at first suspicious of Gulliver because he is a Yahoo, but they eventually treat him with kindness and respect.
Step-by-step explanation:
The Houyhnhnms in Jonathan Swift's novel Gulliver's Travels initially regard Gulliver with curiosity and suspicion. They are amazed by his appearance, language, and abilities, but they are wary of him because he is a Yahoo, a creature they consider to be deplorable and immoral.
However, as they observe Gulliver's behavior and intelligence, they begin to treat him with respect and kindness, recognizing him as a rational and morally superior being.