1 / 21 Mice

It seems strange to worry about the disappearance of animals many people consider pests. Nevertheless, dozens of mouse subspecies are going extinct around the world. For example, the <a href="http://articles.latimes.com/2012/nov/09/local/la-me-pendleton-mouse-20121110" target="_blank">Pacific pocket mouse</a> is sitting on some of the most desirable coastal real estate in California. Fortunately, this little guy is protected by conservation regulations strong enough to deter developers from pursuing building projects in coastal lands worth millions of dollars, causing projects to be put on hold or completely shut down to insure the health and safety of its habitat.

WikiMedia: