“Should” in the question “How often should you wash your dog?” implies the necessity of washing dogs, not one which touches up on the optional bathing time frame periods for dogs or for unexpected situations such as a dog falling into a puddle of mud.
But as defined as the answer the question asks for is implied, there isn’t really a defined and direct answer to it, save perhaps taking considerations over a dog’s fur type, general activities and current climatic conditions.
Dogs with wiry and coarse fur, such as Schnauzers and Terriers, can be ideally bathed once every 4 to 6 weeks, ensuring that coats are kept healthy and free from external rubbish, which can nestle deep into their fur.
Dogs with thick coats, such as Cocker Spaniels and Pekingese breeds, will require bathing sessions at least once every 4 to 8 weeks, with the frequency dependent on climatic conditions.
Dogs which don’t shed a lot or short haired dogs, can be washed at leased once every 6 to 8 weeks, again depending on climatic conditions.
Ideally, getting to know your dog’s specific quirks and kinks with water helps in assessing the frequency and need of bathing, since there are actually dogs who don’ t do well with dealing with water.
Medical issues such as allergies should also be considered, and should your dog be frequently suffering from them, bathing them more often is often advised by most vets.
Bottom line, finding out how often your should give your dog a bath falls within an average of at least once a month, but in ensuring your dog’s cleanliness and general well disposition, it still is advisable to consult with
your vet, since not all dogs are the same.