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Mouse baby belly
Mouse baby belly  
I have some 5 day old (my best guess) wild mice that I wanted to save because their nest was destroyed. One of them got a bubble in their belly and I thought it would work itself out but now it is not moving nearly as much and seems to have a dark spot underneath the stomach. I'm very worried that this could be something deadly and I hope for any advice you could give! Posted a picture to better highlight what I'm talking about.

Hi Lauren,

The good news is, that looks like a milk belly!  :)  That white spot looks to me like a full tummy of formula, and it means you are doing a perfect job.  The dark blotch on the other hand could be anything from skin pigmentation darkening up in preparation for the coat to come in (it's about the right time for it), to internal genetic issues that you wouldn't be able to do anything about anyways, so it's also not something to stress too much over.

As far as movement, at this age the pups should be eating every two hours.  They should start fussing and moving when they are hungry, and settle back down to rest after their tummies are full and their bladders emptied.  With that in mind, not moving much might not actually be a bad thing, as long as he is eating well and peeing each meal.

Keep feeding those babies just like you have been, and if you have any other questions just let me know! :)



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I can answer questions regarding mice as pets, mouse behavior, color and coat genetics, breeding techniques, and general health questions. I can help with caging and setup, nutrition, social issues, and what to do in most mouse emergencies (such as unplanned litters, injuries, fighting, etc.). I can also assist with questions pertaining to orphaned mouse pups, weaning litters, and questions of mating and birthing. I cannot answer questions about exotic or wild varieties of mice such as spiny or pygmy mice. *****FOR EMERGENCIES, anything requiring immediate medical intervention, PLEASE take your mouse to a professional veterinarian or wildlife rehabilitator who works with mice as soon as possible! IMPORTANT RESOURCES: Raising Orphaned Mice: Orphaned Mice Videos: Natasha's Your First Mouse: General Mouse Help: Mouse Info and Exotic Breeds:


I have enjoyed the companionship of mice nonstop since 2004, and spent a year caring for them in a lab where I learned a great deal about their breeding, social needs, and health. I spent a few years breeding them, specifically working with albinos, marked mice, angora mice, and satins. My education never stopped - I am learning something new every day from current and well-established research thanks to the wonderful folks at the Jackson Laboratory, as well as from my wonderful mousey friends online. I also love learning from my terrific questioners here on AllExperts - you folks keep my passion for these amazing animals alive and well!

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