This document discusses endangered species and why they should be saved. It defines what makes a species threatened, endangered, or extinct. Species become endangered due to habitat destruction, overhunting, invasive species, and pollution. Both animals like cheetahs and plants like agueweed are currently endangered. The document lists many endangered animals and plants and provides statistics on total endangered species numbers. Reasons to save endangered species include their medical, agricultural, and ecological importance. Losing species can trigger the loss of many others. There is also a moral obligation to protect species that people and future generations depend on.