Ultrasonic Pet

Laughing is my rat?

I just got a pet rat loves to sit on my shoulder. Sometimes, however, is put on the shoulder and starts rhythmically twitching, and sometimes makes it so hard that I can hear your breath away. I read about the rat is laughing with the ultrasonic signals that humans can not hear, and they do when they are extremely happy and expecting a reward. Laughing is my rat? Or do I have to go to the vet?

Yes, rats laugh, but we can not hear because the tone of his voice is out of range of our human ear. http://abcnews.go.com/Technology/story?id=626264&page=1 I tried to research a word, "sonicadence", but there is nothing on the Internet in this regard. Is it the spelling? Not quite understanding your description I can say three things that your rat could be doing while perched on his shoulder: 1) Bruxism and amazing eyes. It's an emotional release for rats to grind teeth. If you really get into it, a muscle that runs from the lower jaw to the orbits of the eyes also causes the eyes rapidly pumping in and out. http://video.google.com/videoplay?docid=-3828392909771714226&q=rat http://search.yahoo.com/search?search=rats+bruxing+eye+boggling&ei=UTF-8&fr=ks-ans&ico-yahoo- search-value = http% 3A% 2F% 2Frds.yahoo.com% 2F_ylt 3DAmrLvrRZp8SXPzB.OHL0vAIazKIX%%%%% 3D11i8jhaog 2FSIG 2FEXP 3D1184627738% 2F *- http% 253A% 2F% 2Fsearch 2Fsearch.yahoo.com% ico and the search for wikipedia--value = http% 3A% 2F% 2Frds.yahoo.com% 3DAjxFo9BLape1bXCUKlhunhIazKIX 2FSIG 2F_ylt%%%%% 3D1217hd793 2FEXP 3D1184627738% 2F *- http% 253A% 2F%%%% 2Fen.wikipedia.org 2Fwiki 253aSearch 2FSpecial & p = rats bruxism + + + amazing eyes 2) nervous or trembling emotion. It is a vibration you can feel and rats that have just entered into a new home sometimes do this. 3) hiccups. Once again, a sign of excitement rats. Or in a more serious note, could mean that its rate is affected by Myco http://ca.answers.yahoo.com/question/index?qid=20070530233555AARzsf7 give only a few days to settle into your house and continue to observe their behavior. Come back to me in spazrats@yahoo.ca if you are still worried about him in a week. spazrats "my life has gone to the rats"