The most important thing to remember when raising squirrels is that they are wild creatures. You need to be careful, even with second and third generation cage raised animals.
Those who rescue squirrels that have fallen from tree nests in spring use milk replacers that are alsoused on kittens. When older, among other things, squirrels prefer to eat acorns that are lowin tannins.
If your squirrel is a baby you are going to want to bottle feed it from a special feeding device,They enjoy wheat bread,carrots,peanuts,and milk. Do not however feed them human milk. The milk they need is cats milk.