1. The food is excellent. If a dog eats fish with fish bones, chicken or duck meat with sharp bones, or other sharp foreign objects such as steel balls, the sharp foreign objects entering the intestines can easily scratch the dog's gastrointestinal tract, causing the dog to have bloody diarrhea. Case.

2. Gastrointestinal problems. The gastrointestinal tract of some dogs is relatively fragile. During the change of seasons, sudden change of feed, excessive intake, etc., it may irritate the dog's gastrointestinal tract, causing diarrhea or even blood.

3. Infection. When dogs are infected with parasites, bacteria, and viruses, they can also damage the structure of the gastrointestinal tract, causing diarrhea with blood.

4. Poisoning. If your dog eats chocolate or food that cannot be eaten raw, it will cause food poisoning and cause bloody diarrhea.

5. Anal tear. If the dog defecates frequently, the anal sphincter will be overstretched during defecation, which will cause the perianal membrane to tear and cause blood in the stool.

6. Canine distemper is small. Through some basic examinations, we can first distinguish between parvovirus, enteritis and ordinary diarrhea. Generally, if a dog vomits first and then has diarrhea, and is in poor spirits, it is considered to be due to canine distemper; if the dog is listless, has a fever, vomits with foam, and has fishy feces, it is considered to be canine distemper. You need to be sent to the hospital for treatment. Don't delay the best time for treatment.

7. Eating irregularly. If the puppy does not eat on time, or often overeats, the dog's gastrointestinal tract will be damaged, resulting in bloody diarrhea. At this time, it is generally necessary to fast the dog for a period of time and feed it anti-inflammatory drugs. At the same time, pay attention to improving the dog's diet in a timely manner, feeding dog food at a fixed time and in a quantitative manner, and try not to feed human meals.