If you need to feed a baby mouse, you can use formula such as kitten milk replacer, human baby formula, or raw goat milk. It is important to warm the formula slightly before feeding and to use an eyedropper or syringe to feed the babies one small drop at a time until their bellies are nice and round. For the first week of life, baby mice need to eat six to eight times a day, and each week, you can reduce the number of feedings slightly until they are eating three times a day at four weeks. Once the baby mouses eyes are open, you can begin to integrate solid foods such as moistened commercial hamster food, cooked rice or kitten food with a little water, peeled cooked peas, cooked carrots, squash, or other soft vegetables, and human baby food. You can also provide healthy pellets and water once the babies are weaned.