Yesterday morning, my little sisters were outside and one of our puppies, Nova, was walking around like she had something in her mouth she wasn't supposed to have. They got Nova to drop it, and it was a baby mouse! Its eyes were still closed and it was furred already, and it seemed to be fine, just a little cold. Nova seemed interested in snooping around in the garage, so we figured she'd found it in there, but it is a baby that is too little to be out of the nest yet, as it its eyes aren't even open. We decided to try to help out the little mouse, so we did some research and found that the mouse is about 2 weeks old and needs to be fed every 2 hours. We ran to the store and got some kitten replacer formula and some Pedialyte to help with dehydration. Then that afternoon, my little sisters went out to feed the mouse and they found another baby on the garage floor. Since then we have found 2 more on the garage floor in about the same place! We have no idea where they are coming from. They can sort of walk, and we've been finding them squirming around just in the middle of the floor, not really close to anything. We've looked in all sorts of obvious places nearby for a nest, but we can't find anything. The babies aren't in too bad of shape, and they aren't showing signs of dehydration, but at the same time they are leaving a nest, so we can't seem to figure out if their mama is still caring for them or not. We put them in a critter keeper, and are on a 2 hour feeding regimen including overnight last night. If we could find the nest, we'd put them back in it, but we just can't find it. We are planning on caring for them until they are old enough to release into the wild, which would be about 3 weeks from now.
Also just by the way, we are aware of the potential hantavirus risk with wild mice and are taking the proper precautions. We're keeping them outside on the porch, and we are wearing gloves all the time, keeping their little cage clean, and washing our hands every time we are around them.
Here's some pictures.