Which mammal, the third largest, is Igano Kabamaru a reference to?
Igano Kabamaru Igano Kabamaru (伊賀野カバ丸 , Igano Kabamaru , lit. "Hippo Mouth of Iga") is a Japanese manga created by Yu Azuki. The eponymous protagonist is a naive young ninja from the Iga province called Kagemaru (absolute shadow), nicknamed Kabamaru (hippo's mouth) for his insatiable appetite. After the death of his strict grandfather and ninja sensei, Kabamaru moves to Tokyo with one of his grandfather’s acquaintances. The plot deals mainly with Kabamaru adjusting to an urban lifestyle after spending a childhood in the mountains and how he finds himself caught up in the rivalry between two private schools.
Eastern gorilla The eastern gorilla ("Gorilla beringei") is a critically endangered species of the genus "Gorilla" and the largest living primate. At present, the species is subdivided into two subspecies. Grauer's gorilla, formerly known as the eastern lowland gorilla ("G. b. graueri") is more populous, at about 3,800 individuals. The mountain gorilla ("G. b. beringei") has only about 880 individuals. The International Union for the Conservation of Nature mentioned illegal hunting in its assessment of threats to the species.