For the last couple of months, Shey has been coughing and sometimes has a runny nose. I have taken her to the vet a couple times for it and they have treated her with antibiotics (no effect) so they did a chest x-ray. The x-ray didn't show pneumonia or anything. She doesn't seem to feel bad, but it just sounds bad when she coughs. The vet said it might be an allergy, but I'm not sure to what. We've lived in the same house for years. My other dog, Tidbit isn't getting sick so it doesn't seem to be contagious.

Shey will be 11 in December....has anyone else experienced this problem? What did you do?

Sounds similar to what my mother-in-law has been through with her senior Chihuahua. Her Chi is around the same age, maybe a year or two older (I can't remember). Anyway, this past year her Chi has been coughing almost nonstop all day and all night. She's taken him to the vet so many times, done countless tests including chest x-rays and blood tests. Antibiotics and other homeopathic treatments have done nothing. Despite all the tests and vet visits the vet cannot find anything abnormal and cannot determine the cause of the coughing. All tests indicate a perfectly normal, healthy dog but the coughing continues day in and day out as it has for most of this entire year. Her and her vet are at a loss. She has 3 other dogs, 2 cats, and a parrot and none of the other animals have gotten sick. My 3 dogs have also been around her coughing dog on numerous occasions when we visit and none of mine have ever gotten sick either.

I know this doesn't help but at least you know someone else is going through something similar.