<http://schema.org/url>
<http://www.pasadenastarnews.com/science/20131210/cosmic-tango-animals-using-tools-and-your-dogs-love-might-not-be-mutual-the-week-in-science>
<http://www.dailynews.com/science/20131210/cosmic-tango-animals-using-tools-and-your-dogs-love-might-not-be-mutual-the-week-in-science>