It’s hard to resist doggy kisses when you get home from work, or a close-up meow from your kitty just before dawn when she’s ready for breakfast. If your pet has bad breath, though, it could indicate that they have a health issue you need to be concerned about.
Periodontal disease is by far the most common reason why a pet has bad breath. Plaque buildup can cause gingivitis, and if left untreated can turn into periodontal disease. It can cause pets to lose their teeth, develop gum disease, and can cause damage to the kidneys and heart.
Teething puppies will often have a fishy smelling breath. This is not the same thing as puppy breath, however. Teething pets will chew on anything they can find. A piece of food, string, wood or bits of a chewed up toy can get lodged in the mouth or between the teeth and cause an infection of the gums. Teething pups and kittens have a tendency to drool, which can lead to halitosis.
Sometimes a pup or older dog can have breath that smells like they’ve been eating feces, which is very possible, especially if there’s a cat litter box in the home and it’s accessible to the dog. Pets also groom themselves around their anal glands which can produce a fishy or dead smell in their mouth. Intestinal problems or worms can also cause bad breath. In older pets, a bad tooth that needs to be pulled, an obstruction stuck in the throat or mouth can cause an infection and produce an odor. Pawing at the mouth is a good indication something is bothering them.