Causes of bloody stools in dogs:

1. The dog may be infected with parasites or parvovirus, and blood stains will appear in the stool.

2. When a dog accidentally eats poisonous food and suffers from enteritis, it will also have blood in its stool.

3. It may also be caused by eating sharp food or bones that scratch the intestines, causing blood in the dog's stool.

Solutions for dogs with bloody stools:

1. If the dog accidentally eats toxic food and causes severe acute hemorrhagic gastroenteritis, you should seek immediate medical attention at this time. Seek medical attention.

2. If the bloody stool is caused by simple gastroenteritis, it is recommended to use probiotics, pay attention to diet, and reduce inflammation.

3. If it is caused by parasites, the dog should be dewormed in time.

4. If the dog is infected with a virus, it should be treated with a doctor in time.