Another nasty thing out there is kennel cough!
Our sweet Lily, who goes to doggie day care once a week when we are home, came down with a form of this on Monday. We had been forewarned last week by the day care.
When we took her to the vet on Tuesday, he diagnosed tracheobronchitis and put her on an antibiotic. She was the 6th dog they had seen that day with it. Poor baby, hacking her tonsils out.
She was markedly improved after 24 hours on the meds, only an occasional cough at this time.
Maggie