Geography of mammalian herbivores in the Indian Trans-Himalaya : patterns and processes
Animals need adequate resources so that their populations not only survive but thrive. So they seek places that can best provide them. Yet, they face several challenges, while obtaining these resources, e.g., predators, competitors and physical obstacles: mountains and rivers. Some animals are better-equipped to overcome these challenges, and are widely distributed, while others are not. These differences generate uneven pattern of distribution of life on earth.