We are a naturally hierarchical species.
Octavia E. Butler
Unfortunately, with dinosaurs, we haven't had enough specimens to determine how much variation there is within a species.
Jack Horner
It's no longer an exaggeration to say that middle-class Americans are an endangered species.
Arianna Huffington
I don't think of kids as a lower form of the human species.
John Hughes
Aquatic invasive species are destroying the environment, damaging fisheries, and costing American taxpayers billions of dollars annually.
John M. McHugh
Endangered species are our friends.
Yao Ming