Hamsters are lacto-vegetarian, meaning their natural diet consists of seeds, grains, and other plant-based foods. They are not able to digest milk properly, and giving them milk can cause serious health problems like diarrhea, dehydration, and even death.
If you find a baby hamster that has been abandoned, the best thing to do is to take it to a wildlife rehabilitation center or a veterinarian who specializes in exotic animals. They will be able to provide the proper care and nutrition the hamster needs.