There are sharp objects such as chicken bones and fish bones in the food, which can puncture the oral mucosa and cause bleeding. It is recommended to clean up the foreign objects and treat them with anti-inflammatory drugs. Dogs suffering from periodontitis, dental calculus, dental caries, etc. can cause bleeding. It is recommended to consult a doctor for treatment.
Care Hacks
Why do dogs’ teeth bleed?

Bleeding teeth in dogs may be caused by factors such as inflammation, scratches, oral diseases, etc. The dog's usual food contains too much oil and salt, or the food is too dry, and the dog drinks less water, which will cause the body to get angry and cause the teeth to bleed.