In this chapter, Dr. Doolittle embarks on a monumental medical mission to combat a widespread epidemic among the monkeys. His initial strategy involves a methodical triage: separating the "sick animals from the healthy ones." With the assistance of Chi-Chi and his cousin, the doctor constructs a grass hut and administers medicine via needles to prevent further infection. Despite the initial fear the monkeys felt toward the needle, they quickly recognized its necessity, leading to a massive three-day effort where monkeys arrived from all the "hills and valleys surrounding the land" to receive treatment.
As the number of sick monkeys grew, the doctor found himself overwhelmed and in desperate need of nursing assistance. While animals like "leopards, antelopes, and giraffe all arrived to pitch in," the leader of the lions presented a significant obstacle. Driven by arrogance, the lion king refused to help, declaring, "I'm the king of all the beasts. I don't have time to waste on sick monkeys." He dismissed the doctor’s warning that the lions might one day need help themselves, foolishly claiming that "the lions are never in trouble" and that they only "make trouble." This hubris was contagious, causing the leopards to leave and the antelopes to become too "shy" to assist.
The narrative shifts dramatically when the lion king returns home to find his own family in crisis. His wife, deeply distressed, reveals that one of their cubs is gravely ill and "hasn't eaten anything since last night." Confronted with the sight of his sickly cub, who could only "smile weakly" at him, the lion king’s facade of invincibility begins to crumble. When he shares his encounter with Dr. Doolittle, his wife rebukes him, highlighting the doctor’s unique ability to "speak animal language" and his reputation as a man who "can cure any kind of illness." Faced with his wife's anger and the desperate need to save his cub, the lion realizes the error of his pride.
The lion returns to Dr. Doolittle, attempting to save face by pretending he was just "passing this way." He offers to help, claiming, "I suppose I could help you in some way," and ensures that the other animals return to their duties. Dr. Doolittle, displaying grace and professionalism, accepts the help, allowing the doctor to focus on his work. The outcome is a resounding success: by the end of the second week, all the monkeys were "cured." The chapter concludes with the exhausted doctor sleeping for three days, having successfully leveraged the power of cooperation and empathy to overcome the initial arrogance of the jungle’s "king."