Raylan, my late shepherd mix, had a problem with car rides. He’d hop into the back seat, excited for a new adventure, but could last only about 15 minutes before standing up, drooling and retching.

Q: My 14-year-old dog had a collapsed trachea. Our veterinarian put her on Cerenia as well as a steroid and an antibiotic. My dog is much improved, is hardly coughing and is acting normal again. My ...