Do I Need To Worry If My Dog Ate A Dead Mouse. No, need to worry, the acid in dogs stomachs is much stronger than out own and kills off any disease and enables them to digest meat that is past its best, so a mouse is no problem to them. For one thing, if the mouse has been dead for a while, it could cause gi problems.

Thus, if my dog ate a mouse that had died from poisoning, i would be greatly worried. This will often occur if a dog eats a mouse or rat that's infected with the parasite's larvae. You may want to enquire where the mouse came from, and if a neighbor is putting out rat or mouse poison.