Ive had milo for over a month now and hes been in antibiotics since i had him for a respiratory infection. Doxy baytril and a course of pred. A local rat expert told me i could go ahad and get milo a friend (as his friend before died from the uri he had from the terrible pet shop). I adopted from a rescue a guy about 4 mo old, milo is a little over 2 months. They roughhouse alot but milo has had a persisting cough that has been going on for a long time. I believe it is do to my housemates smoking, after being in antibiotics for that long when the new rat came in, two days later he had the cough too. Ive moved them into my room exclusively, they are both on doxy and baytril twice a day. They wrestle alot but no blood has been shed so i assume its okay. They were seperate for 5 days before moving in together. I have an air purifier coming in the mail, and i have a humidifier. Their symptoms are wet crackly sounding yawns, coughing fits now and then, sneezes and some chirpey sneezes. Milo has adopted a hunched position for most of the day, and he has been side breathing as well. Please any advice would be much appreciated.