Pooping blood is not a good sign, that's right. It could be something serious. On the other hand it could be something not quite so serious. For instance, if a dog has had a bout of diarrhea (caused by anything, even if caused by just 'eating the wrong thing') and keeps straining, like they often do with diarrhea, that in itself can cause small amounts of blood in the stool, even though the actual cause may not be a deathly serious thing.
Eating chocolate (very bad idea) can cause this.
The only way to know however, is to take your dog to the vet promptly. Do take a stool sample with you.
There may well be some herbs that will help eventually, when it is discovered exactly what the cause of this is. But I would not advise using herbal medicine right now. The vet needs to make a diagnosis, and recommend a course of treatment straight away, and herbs would interfere with this treatment. Also, depending on what is wrong, herbal medicine may or may not be appropriate. I wouldn't advise using them without advice from a herbal vet anyway, as some herbs safe for humans, can be toxic for dogs.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.