Step 1: Understanding the Question:
The question identifies a specific deer species based on its physical resemblance to another animal (a pig) and its preferred habitat (grasslands).
Detailed Explanation:
• Hog Deer (Axis porcinus): This species gets its name from its habit of running through the undergrowth with its head down, similar to a pig (hog), rather than leaping like most other deer. Physically, it has a heavy, low-slung body with relatively short legs.
• Habitat: Hog deer are primarily found in the alluvial grasslands of the Terai region and the floodplains of the Ganga and Brahmaputra rivers. They are highly dependent on tall grasses for cover.
• Comparison with other options:
- Hangul: Also known as the Kashmir stag, it is a subspecies of red deer found in the temperate forests and meadows of the Himalayas (Dachigam), not looking like a pig.
- Barking Deer (Muntjac): Small deer found in dense forests, known for its bark-like call, not its resemblance to a pig.
- Mouse Deer (Chevrotain): Extremely small forest-dwelling ungulates that look like a cross between a deer and a mouse, but not a pig.
Step 2: Final Answer:
The deer that looks like a pig and lives in grasslands is the Hog deer.