http://www.helium.com/knowledge/210190-why-cats-purr-and-what-they-are-saying-when-they-meow.xml Helium.com > Cat Psychology > Why cats purr and what they are saying when they meow en-us Copyright Helium.com Tue, 10 Mar 2009 19:54:05 GMT Tue, 10 Mar 2009 19:54:05 GMT