here is little debate that humans are the top dog when it comes to life on Earth. While being top dog is good for humans, it is not so good for almost every other form of life. There is little debate that humans have an impact on all ecosystems, mostly because of loss of natural habitat. The list of endangered or extinct species grows faster now than ever before on Earth, scientists say.
Last week, another animal popular in the northwestern corner of the United States faces a similar fate. The Pacific Northwest Tree Octopus will be the newest animal added to the rapidly growing list of endangered animals. Biologists are most concerned with the fate of this octopus because it is one of the few currently living animals that give evolutionary clues to how life migrated from water to land.