Ah good info. Thanks! Yeah there really isn't anything else present just the noise. But it's mainly when she is excited. So I am not to worried anymoreA1APassion said:too late to edit so I guess I should add a bit to my original post
The noise I described & what I believe is going on in the video doesn't seem to be an indication of illness. I can't get into a rat's mind & I don't speak rat but after years of having them sometimes you can just sense what is going on with them & understand some of their ratty expressions, especially within my own rats.
This sound when done by a healthy rat & at certain times of excitement & curiosity seems to be a sound that some rats are able to create at will whereas if the rat was ill the sound (or similar sound that is more in the lungs & much wetter sounding) would be more 24/7 & you would see other symptoms.
So, if the rat is making this noise just any old time & there is presence of porphyrin, they have a slightly disheveled look about them & such... then I would suggest paying closer attention to them as it could be an indication of something going on