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My new gerbil has green, mushy poop and a red bottom. Is it serious?

Updated On September 23rd, 2025

Pet's info: Other | Unknown - Other | Male | unneutered | 0 lbs

My new gerbil and bad mushy poop that smells it was lighter in colour yesterday but has now changed to green. He is still very active and is both drinking and eating. When I got him from the pet store they did tell no that his anal area is a bitt red I colour. It has not gotten visibly redder as far as I can see. He is also little smaller than the other boy gerbil.

2 Answers

Most Helpful Answer

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Answered By Rebeccah Wood

Licensed Veterinary Technician, Registered Laboratory Animal Technologist

Published on October 21st, 2017

Hi there! While diarrhea in new gerbils is not entirely unusual (as stress and food changes can cause soft stool), I am concerned about the combination of continued diarrhea and the green coloration. Unless you have been feeding Peach a large amount of green-colored food, green coloration usually indicates a large amount of bile released in the intestines, and this can indicate a disease process. A common diarrheal disease of Gerbils is called Tyzzer's disease, and it can cause fatal dehydration if not treated. I'm glad to hear that Peach is still eating, drinking, and acting normal, but if the diarrhea continues or if his attitude changes, I strongly suggest taking him to the vet as he may require antibiotic treatment and fluid replacement therapy. This condition may also be contagious, so keep a close eye on the other gerbils for similar symptoms. Hopefully, the diarrhea will abate on its own, but if it doesn't after a day or so, please consider contacting a veterinarian. Best of luck to you and your new friend, Peach!

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Other Answers

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    Answered By Dr. Dayna, DVM, CVA

    Veterinarian, Certified Veterinary Acupuncturist

    Published on

    When gerbils develop diarrhea they can become very sick very quickly. Most pet stores do have products for “wet tail”, but it is not a substitute for a veterinary visit. However, I would consider starting one of those products until you are able to see the veterinarian. Diarrhea in gerbils does have a very high mortality as they become dehydrated quickly. Best of luck and thank you for using Pet Coach.

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