Possible URI?

Question
Hi, I have a quick question in relation to the health of my two male guinea pigs. I noticed that within a few days, they went from being happy healthy guinea pigs to lethargic guinea pigs. I have also noticed they have diarrhea. They are also not eating, hardly drinking, they have slow, sharp breathing, a little hair loss, weight loss, stiff fur around the mouth (especially around the chin) and backside, squinty\crusty eyes, they hardly move and are not squeaking anymore. I'm more than sure they could have a URI but I can't be sure. Please help!

Answer
Yes thats a URI, which is pretty serious, for now I would seriously recommend taking them to the vet, the sooner the better. for preperation against future outbreaks look up baytril and its usage for ill guinea pigs, this will work out cheaper for you.