Has anyone ever had any experience with FLUTD in guinea pigs? Since around November I've had my little milo at the vet a few times about squeaking while peeing. Nothing was done because around dec1jan they did a dip test on a urine sample and it showed no infection. The squeaking wasn't constant throughout that time. About 3 or more weeks ago I noticed he sounded really sore and had peed a little bit of blood, so I took him straight to the vet. X rays showed there was no stones or anything else so he was given a week worth of anti biotic. It didn't stop the squeaking completely but there was no more blood. Last week he started peeing blood again, quite a few times in one night so I took him straight back to the vet. They have given him another anti biotic and pain relief. There hasn't been any more blood but occasional squeaking while peeing. One of the exotic vets has owned guinea pigs herself and has come to find that they seem to be able to get a condition mostly common in cats known as FLUTD. They said it can be triggered by different things, infection, stress or basically the bladder can get irritated for no reason at all. They suggested separating him from his brother incase that could be a stress factor but my boys don't fight, just the normal dominance behaviour (they are both 11 months old). He's still eating and drinking and hasn't lost any weight. He doesn't seem stressed to me but I'm so worried and stressed I just don't wanna miss anything and want to be able to help him. I'm not sure what to do and was wondering if anyone has had any similar situations and could give me some advice? He's squeaking quite a lot today again but no blood. He's still getting his meds and has another vet check up on Tuesday.