The Great Indian Bustard, Musk Deer, Red Panda, and Asiatic Wild Ass are classified as endangered species primarily due to habitat loss, poaching, and climate change, which significantly threaten their survival. In the context of the UPSC Prelims GS Paper I, understanding the status of endangered species emphasizes the importance of biodiversity conservation and the ecological balance, which is crucial for sustainable development in India. Their protection is also aligned with international conservation efforts, such as those outlined in the IUCN Red List and various wildlife protection acts in India, which highlights the need for environmental governance and policy enforcement.