Kaziranga national park present in Assam is famous for conserving Rhinoceros. A park in use for conservation purposes is known as a National park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Flora and fauna are provided immense protection in such areas. Currently, in India, we have 166 national parks. So, the correct answer is 'Rhinoceros unicornis'.