Irregular brushing of teeth, severe problems in the liver and kidneys can be the main cause of bad breath in dogs.
To get rid of bad breath in dogs, you can do the following:
Brush the teeth regularly with good dog toothpaste.
You can take him to the vet for a thorough dental checkup and tartar cleaning.
Good medicinal dental chews may help forego the bad breath problem.
Give him chew toys filled with toothpaste or clean treats.
Feed him plain yogurt daily to clear off and for smooth digestion.
Add parsley leaves to his food as they hold good antibacterial and breathe freshening properties.
You can add some coconut oil to his food. Dogs love the taste of coconut oil and coconut oil has good antibacterial and antifungal properties.