It depends on the dog’s age and general health. Obviously, if your dog is sick or has some sort of chronic condition, you should take them to the vet as much as necessary to manage their health.
For healthy dogs, age is the biggest factor. The lifecycle of a dog goes through three major phases: puppy, adult, and senior. Puppies (ages 0 to 1) need to visit the vet several times in order to get vaccinated. Healthy adult dogs (ages 1 to 7 or 10) only need checkups once a year, and when dogs become seniors (between 7 and 10 years old, depending on age), it’s a good idea to give them a checkup twice a year. To make sure everything is in order.
Always keep an out for signs of health problems in your dog. If you think they might be in pain, click here to learn about signs of pain and pain relief for dogs.