Indian rhinoceros; great one-horned rhinoceros
Refers specifically to Rhinoceros unicornis, the large one-horned rhino native to the Indian subcontinent.
The Indian rhinoceros is designated as an endangered species.
I saw an Indian rhinoceros for the first time at the zoo.
From インド (India) + サイ (rhinoceros), a straightforward compound naming the species by its geographic origin.