Kittens Young kittens will need a vet visit on a monthly basis until they reach around 4 months of age to get their necessary vaccinations and to check for illnesses. They will need to return as they approach 6 months for their spaying or neutering procedure. Kittens reach adulthood at 1 year old, when they will also need to visit the vet again for a checkup. Adult Checkups The average adult indoors-only cat should see the veterinarian for regular health exams every six months to a year. Cats tend to hide signs of their illnesses, so you may not pick up on them as your vet will. By seeing your cat one to two times yearly, the vet will also get an idea of the normal behaviors and weight fluctuations of your cat. This is helpful to him in monitoring for changes that could indicate an illness. Early diagnosis of any problems is the key to treating them and protecting your cats health. Senior Cats Indoor cats between 7 and 10 years of age are considered senior and should see the vet twice a year to monitor them for illnesses common in older animals.. If your cat is more than 15 years old, they are considered geriatric and may require more frequent visits so please check with your veterinarian on how often they would like to see the patient. Older cats, even those that live indoors, tend to develop problems like obesity and kidney or liver issues that need careful monitoring by a veterinarian. Vaccinations Cats need to see the vet at least once a year because they need vaccinations. While indoor cats don't need as many vaccinations as those that live primarily or partially outside, they need what are considered "core" vaccines necessary for all cats.. Rabies vaccinations are required annually. The other vaccine recommended for indoor cats is the combination FVRCP vaccine, which protects against viruses and distemper. This vaccine is also given annually. Illness In addition to your cat's yearly or twice-yearly visit to the vet for a checkup, a trip to the vet is in order any time she exhibits signs of an illness. Indoor cats may suffer from things like diabetes, kidney problems, urinary tract infections and urinary stones. Signs of illness include lethargy, weakness, unusual vocalizations or behavioral problems. If your cat is eliminating outside of her litter box or vomiting frequently, she may be suffering from an illness and needs to see a vet immediately. Cats that have previously been diagnosed with chronic illnesses like heart problems, diabetes or kidney disease need more frequent visits to the vet and how often depends on the condition. Consult with your vet about how often to bring in a cat suffering from an ongoing medical problem. The Vet Visit Prepare your kitty for the trip to the vet by exposing her to her carrier a few days before the visit, adding treats or toys inside to make it seem appealing to her. Always keep her in the carrier on the way to and from the vet. Tell your vet about any vital information, such as recent changes in her health or behavior. Be sure to bring your cat back for any recommended follow up appointments.