...  by Vicky: How long does it take for anitibiotics to start working for kennel cough? Our 11 week old puppy that we adopted from the animal shelter 9 days ago was diagnosed today with kennel cough & pneumonia. She is coughing, very lethargic & won’t eat or drink. The vet gave her an antibiotic in shot form & gave her fluids. He said that she had a guarded prognosis, meaning she might make it, might not. I’m very worried, we’ve only had her for 9 days, but we are already attached. I’m just wondering if she does pull through, how soon should I start seeing improvement? Read ...