Diarrhea in Cats (Red or Bloody)
- Bloody diarrhea is always a cause for concern and should be addressed as soon as possible by a veterinarian.
- Feces that are dark red or black in color indicate upper GI bleeding and blood digesting.
- Lower digestive tract bleeding is indicated by bright red coloring within or coating the stools.
- Dehydration or parasite infection may be indicated by mucus-coated feces.
Diarrhea in Cats (Yellow or Green)
Discolored feces can be caused by anything your cat has just consumed. Green coloration can be caused by grass or green-colored materials, which isn’t generally a medical concern, though some animals with green feces have gallbladder illness.
Yellow feces can indicate a medical emergency caused by liver disease or failure, zinc overdose, immune-mediated hemolytic anemia, or bacterial pathogen overgrowth.