Hi there. My rat cheese has been on doxycycline & baytril for 18 days now for a URI, both givin to him every 12 hours. He's been sneezing every day & i was curious on if the sneezing should've stopped by now? He even has sneeze fits sometimes. i have another rat that isn't sneezing at all so i don't think it has anything to do with dust or the environment. The cage is well kept up with and i have dust free bedding. any suggestions? is it normal for him to be sneezing for this long on antibiotics ? Thanks !