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Why is my Great Dane lethargic with bloody diarrhea and no appetite?

Updated On September 23rd, 2025

Pet's info: Dog | Great Dane | Female | spayed | 4 years and 6 months old | 130 lbs

My Dane has not been acting right. I noticed about a week ago she had diarrhea and at the end had some blood. She seems to be lethargic and very little appetite. One day she seems fine ,the next she won't hardly eat anything and will just lay around. She is a very well behaved dog. Today she's just laying here and don't want to get up for nothing. Normally she wants her treats going nut. Please help us save her.

1 Answer

Most Helpful Answer

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Answered By Juliana, DVM

Veterinarian

Published on May 10th, 2017

Diarrhea with blood and a decreased interest in food can be caused by many, many things. Some of the more common causes can include irritation/inflammation of the stomach or intestines or pancreas from eating certain foods or treats that don't agree with her, intestinal parasites , or eating a toy or foreign material that is moving through her system. Since this has been going on several days she should be evaluated by her veterinarian so they can assess how comfortable her belly is, check her for dehydration, run lab tests on her if indicated , and prescribe medication for the diarrhea if needed. In the meantime you could offer her bland food such as boiled skinless chicken breasts and white rice.

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