I remember Belle doing that for the first time, she was my first bun i had had since i was a kid, so i nearly had a stroke w hen she did it. I was so worried i called a friend of mine to make sure that it was ok that she was doing that,lol, needless to say my friend called me back laughing at me.
Then when i got Sooty he did it within hours of being at my house, i again nearly had a stroke thinking that the stress of coming to my ho use was too much for him,lol. I come to find out with him that he just loved to DBF and there were times that i would walk by the cage and would stare at him to make sure he was alive because he would not move when hearing me, he was the MASTER at doing this. He would also lay with his head tilted back and sometimes with his lil legs all stiff and stretched out. lol. I think they like giving us heart attacks,lol