Croup? Like for Chickens?

For the past week John has been sick. He has had a sore throat, very nasty thick nasal drip and a deep barking cough. The cold seems stuck in his larynx, giving John a deep raspy voice. The internet tells me this is croup. He's getting better now, but I had to cancel a playdate with Lily last Saturday, which disappointed John (and Lily). The cough was especially bad at night. For the first two night, it would scare him and he'd cry and then his cough would get even worse. Now he says Go away cough! Go away snots! He can blow his own nose now, but he doesn't like it.