The one-horned rhinoceros, also known as the Indian rhinoceros, is a large herbivorous mammal native to the Indian subcontinent. It is characterized by its single horn, which can grow up to 25 inches long. These rhinos have thick, wrinkled skin that resembles armor and are typically found in grasslands and riverine forests. One-horned rhinoceroses are primarily solitary animals, although they may gather in small groups near water sources. They are listed as vulnerable due to habitat loss and poaching for their horns, which are highly valued in some cultures. Conservation efforts are ongoing to protect their populations in the wild.