We can take a global macro view when it comes to animals. Why should their lives be as important as people's? Ability to feel pain? Scarcity? [In the sense th

We can take a global macro view when it comes to animals. Why should their lives be as important as people's? Ability to feel pain? Scarcity? [In the sense that there are 7 billion people and only 5000 tigers, so we should focus on saving the tiger?]