#sneezing

Hello! I recently became an owner of 2 guinea pigs around 2 months ago. I have a concern and was wondering what I should do. Recently (about a couple days ago) I opened a new bag of hay for my guinea pigs since they just finished a previous bag. It is the same brand of what they have been...

My guinea pig Nugget has been sneezing the past 2 days. I'm not sure his exact age because I got him from Petsmart but he is very tiny. He mainly sneezes when he is eating or drinking. I looked this up and everything is saying he has an URI but, he does not have any of the symptoms besides...