As many as 30 to 50 percent of all species are possibly heading toward extinction by mid-century. 99% of currently threatened species are at risk from human activities, primarily those driving habitat loss, introduction of exotic species, and global warming. The World Wildlife Organization focuses on saving certain species that help sustain other species. They protect wildlife such as pandas, whales, rhinos, marine turtles, primates, polar bears, and big cats. BE a HERO.