I got a new camera for Christmas, capable of taking movies, and have been playing around with it a bit. Robyn's cat, Guinness, has the loudest purr I have ever heard and it sounds quite unlike any other purr. When we were in the car bringing him home from the shelter a couple of years ago we actually thought something was wrong with the car and that the sound was coming from the engine. LOL! Anyway, I tried to record Guinness purring but didn't do a really good job, but here is a sample....

http://www.youtube.com/w/?v=xgVckmsu2Vg