These granules are indicative of blood being present in the vomit. Fresh blood in the vomit will often indicate stomach ulcers or cancer. If your cat has a fever, a stomachache, jaundice, anemia, or masses in the stomach, your veterinarian will be able to make a more specific diagnosis. Sometimes, something as simple as coughing will cause a cat to vomit.
http://www.petmd.com/cat/conditions/digestive/c_ct_vomiting_chronic
Red Blood in Baby Poop. While your baby’s poop can turn red because of something he or she ate or drank, such as tomatoes or fruit punch, red baby poop can be a sign of blood in the stool. Red blood found in normal poop could be a sign of a milk protein allergy, while red blood in diarrhea could mean your baby has a bacterial infection.
https://www.unitypoint.org/blankchildrens/article.aspx?id=40567710-74c7-4ef2-a040-847be9fbd35a
Dog blood in stool can be medically categorized as either hematochezia or melena. In the case of hematochezia, the blood in the dog stools is bright red and is usually mixed in with the stools. The red color indicates that the blood comes from the lower intestines, most likely from the colon and the rectum. In melena, however, the blood causes the stools to turn black and tarry, indicating that the source of bleeding is in the stomach or upper small intestine, and the blood has been partially digested. There are numerous possible causes of dog bloody stools - some are more serious than others.
http://www.natural-dog-health-remedies.com/dog-blood-in-stool.html
Diseases of the stomach and upper intestinal tract are the primary cause for this type of vomiting. Secondary implications are diseases of other organs, which bring about an accumulation of toxic substances in the blood, stimulating the vomiting center in the cat's brain.
http://www.petmd.com/cat/conditions/digestive/c_ct_vomiting_chronic
Severe complications can occur when a cat is not getting the nutrients it needs, or when food is inhaled into the airways, which can lead to coughing, and even pneumonia. Chronic vomiting can affect both dogs and cats.
http://www.petmd.com/cat/conditions/digestive/c_ct_vomiting_chronic
This type of dog blood in stool may also result from ingestion of blood. For example, your dog may have licked a bloody wound or he may have had a mouth injury causing him to swallow blood. The partially digested blood turns the stools to black and tarry.
http://www.natural-dog-health-remedies.com/dog-blood-in-stool.html
1 Dry, dark-brown stool means excessive heat is present in the large intestine. 2  Loose stools with a fishy odor pertain to excessive cold in the intestines.  Extremely dry and hard stool is often seen in a deficiency of blood or body fluids.
http://www.shen-nong.com/eng/lifestyles/tcmrole_urine_exam_stool.html
Symptoms of vomiting include heaving, retching, and the expulsion of partially digested food. The contents being expelled by the cat may be in predigested form, tubular in shape, and often covered with a slimy mucus or bile.
http://www.petmd.com/cat/conditions/digestive/c_ct_vomiting_chronic
The stool should neither be too hard nor too soft, and should not have a foul odor. There also should be no pus, blood, mucus or undigested food in it. A TCM physician usually notes the frequency, form and color of the stool as well as the accompanying feelings during defecation. An offensive odor of stool pertains to heat accumulation.
http://www.shen-nong.com/eng/lifestyles/tcmrole_urine_exam_stool.html
1 Extremely dry and hard stool is often seen in a deficiency of blood or body fluids. 2  Loose bowels with shapeless stool usually are due to deficiency cold in the spleen and stomach.  Initial discharge of a hard stool and then discharge of a loose stool can be seen in dampness accumulation caused by a spleen deficiency.
http://www.shen-nong.com/eng/lifestyles/tcmrole_urine_exam_stool.html
what color is partially digested blood
Partially digested blood is Black and tarry color. Black and tarry color is partially digested blood. 