These are two baby flying squirrels we raised and released after my older brother found them last winter.They had  fallen from their nest and would have frozen to death if he hadn't rescued them .We could play with them more at night because the flying squirrel is a nocturnal species.  When we first got them we had to feed them a puppy formula mixture through a medicine dropper, and they were thirsty little critters! (This was recommended by our vet.)  After a few weeks, we fed them nuts and seeds like they naturally would eat in the wild. It was fun to watch them nibble away until the nut was gone or they were full. This went on for a couple of months, and then, when they were big enough, we found a nice tree in our yard and let them go.