Why does my rat chatter?

[325i]

Hi,

Does anyone know why my pet rat chatters or yams all the time? he is not shy or timid?

Thanks

[Jugglering]

From the Small Animal Advice Site:-

"Teeth Chattering - This is a sign of pleasure in rats and is similar to purring by a cat. It is known as 'bruxing" and you'll notice that his eyes will look as if they are about to pop out of his head. However, if a rat is scared - when he is at the vets for example - he may also chatter (but no eye popping)."

http://www.smallanimaladvice.com/is_my_rat_wel l.php

[325i]

Ha Strange!

Thank you