The reasons why Teddy dogs have bad breath:

1. Teddy dogs do not brush their teeth regularly. When the dog eats, there will be food residues left between the teeth. If the owner does not have the habit of brushing the dog's teeth, the food residues will rot and ferment over time, giving off a smell.

2. Teddy dogs suffer from oral diseases. If a dog does not brush its teeth for a long time, it will easily form dental plaque and calculus, or the dog will suffer from oral diseases such as oral ulcers and periodontitis, which will lead to bad breath.

3. Teddy dogs often eat food eaten by people. The food that people eat contains a lot of seasonings, and is heavy in oil and salt, which cannot be digested and absorbed by dogs. It will burden the dog's liver, kidneys and gastrointestinal tract, and cause bad breath.

4. Teddy dogs have poor digestion. If your dog has constipation, diarrhea, or eats indigestible food that causes flatulence, food accumulation, etc., the smell of fermented food in the intestines and stomach will also be emitted through the mouth.

5. Teddy dogs suffer from diabetes. When a dog suffers from diabetes and develops to the stage of ketosis, the mouth will smell like rotten apples. The owner must take the dog for treatment in time to eliminate the symptoms.