Ep. 4: The youngest capybaras display high energy levels while observing adult behaviors.
Aired on October 30, 2020

This segment focuses on the youngest capybaras, who are described as being very energetic. The narration questions whether these young animals imitate the adults around them or if they are simply a little active. The content is presented with commentary provided by Yuichiro Umehara, as sourced from the official anime site and subsequently translated and edited for the audience.
Episodes
- Ep. 1 · Kapibara-san resides in Midorino Plains, walking around and eating frequently.
- Ep. 2 · Kapibara-san enjoys a relaxed day of eating and playing
- Ep. 3 · Kokapiani, the Admirer of Kapibara-san, Distinguishes Himself from Lookalikes
- Ep. 4 · The youngest capybaras display high energy levels while observing adult behaviors.
- Ep. 5 · Ryama-san is tall and is told not to be mean while Fumiya Takahashi provides narration
- Ep. 6 · Namakemono-kun moves very slowly in this episode featuring narration by Yuichiro Umehara.
- Ep. 7 · The group departs Midorino Plains for a walk where Kapibara-san encounters Capybara... san.
- Ep. 8 · Howaito, the rare white capybara, dedicates himself to maintaining his pristine appearance and beauty.