Sounds sound like broken squeaker?

I know what you're talking about but not sure why they would make this noise. My Luna makes that noise all the time but she's very healthy with no URI. I figured it was just her.

One of my girls sometimes makes a raspy sounding squeak as well, and she is perfectly healthy, so it very well could just be something he does, but definitely watch him just in case. It COULD be early signs of a URI. If he starts showing any other symptoms: runny nose, runny eyes, wheezing, labored breathing, coughing, sneezing.. anything like that then get him to a vet asap. But piggies make all different noises and it very well could just be something he does. My Jayda tends to do it right before I give her veggies Just keep an eye on him!

thank you so much! i checked his eyes, nose, and ears earlier and no signs. hopefully it's nothing! :/

I hope so too!!

One of my guinea pigs has always sounded that way. He has such a raspy squeek but he is perfectly healthy.