Nothing can ruin the Winter holidays faster than a sudden illness of a loved cat, especially a senior guy in his final years. This happened to our family in December of 2005 when our 18 YO Bubba died suddenly after an extended illness. If you've put off his twice-yearly exam, it's time to see to it without delay.
Please don't overlook the health of younger cats either. Adult cats should be seen at least once a year for routine annual exams; more often if they are special needs cats. Kittens need the important first routine exam, then a series of vaccinations, and spay or neutering (the earlier the better), during the first year of life.
Signs of potential veterinary emergencies should not be ignored either. It is extremely important to know when to call your veterinarian, and to do so without delay, when indicated. By keeping your eyes open, and giving diligent attention to your cats' veterinary needs, you can make the Winter holiday season happier and less stressful for the whole family.