What is the difference between a black rhino and a mouse and the same?

The black rhino and a mouse differ significantly in size, habitat, and physiology. Black rhinos are large, endangered mammals native to Africa, known for their thick skin and horn, while mice are small, agile rodents found in various environments worldwide. Both species are mammals, sharing characteristics like warm-bloodedness and fur, but they occupy vastly different ecological niches and have different roles in their respective ecosystems. Despite these differences, they both contribute to biodiversity and the functioning of their habitats.