Turn up your volume to fully appreciate this one!  Zipper almost sounds like a grinding car that won't quite start on a cold morning! 

s217.photobucket.com/albums/cc278/buttonbutt/GirlsTogether/

They get so loud playing with Wiggly Giggly I don't let this toy in the house, or we wouldn't be able to hear ourselves think! 

Now that I'm done laughing  Rattagan gowls when he's playing tug-o-war. Listening to them you'd think they were fighting, but we know a fun growl from a mean one.