So last night I am going to bed and i hear a loud ruckus going on in the tank, so I turn on the light and see Ty in her breand new Murex shell all fancy thinking she is queen bee now trying to stuff herself in a coco hut that already has 4 crabs in it, she is climbing and pulling and shoving her way in there and finally, Patrick has enough and chirps at her for a good 10 seconds and pushes her backwards out of the coco hut, it was the funniest thing i have ever seen them do! Ty finally got the hint and went to bed in the completely empty coco hut next door and then was joined by Patrick!!! Guess he wanted to say he was sorry for being a grump! LOL And the fist time that I have REALLY heard them do it! Has anyone ever owned a guinea pig? The chirping sounded an awful lot like a Guinea pigs "purr" to me. High pitched squeaks almost.