How do i take care of a newborn mouse?

If a baby mouse has gotten to the stage of being able to open it's mouth widely enough, then you can feed it with kitten formula (KMR, or Esbilac for puppies) from an eydropper. Only feed it a few drops at a time, but at least once every hour, not more than three times in an hour. If the baby pushes it away, it is not hungry, do not force it. If the newborn has a very small mouth, then you may need to use a pipette. sometimes a local Veterinarian will have them. It can't hurt to ask for them. If you do not have or cannot find kitten formula, then you can try to use sweetened condenced milk, diluted with 2 parts water for every 3 parts milk. Whatever liquid you use, you will need to warm it slightly, and test on the inside of your wrist like you would with a baby bottle. Once a feeding session is over, immediately wash out the dropper/pipette, and refrigerate any remaining mix. Do not warm the liquid more than twice, as this can allow bacteria to multiply. Place baby in a "nest" of clean, soft cloth or straw, sawdust, etc. You may choose to place the nest in a box on top of a heating pad, or under a light bulb- no more than 15 watts! watch the mouse, and if it starts panting or moving away from the light, it is too hot. you want to take care of it, not bake it. Once the eyes are open, that baby will move! You may then take the bulb/heat pad away, to use only at night, and make sure there is a top on the box. Those plastic "bug boxes" that can be bought at the store work well, bacause they have a hinged top, but also a smaller panel as well as clear sides to check the baby as necessary. When the eyes open, you may start leaving a few seeds, or oatmeal-unflavored- in the box as well. This is when you start weaning the mouse. Feed less often, but more food-up to about 6 to 10 drops, and space the feedings further apart. by the time the mouse is about 4 weeks, it should be weaned. watch its weight, though. if you notice weight loss, feed more often. This feeding plan will work for most animals, but the timing and amounts will be different. Every case has special differences, that could be dangerous to the animal if it is not cared for correctly.