When feeding your ferret it's important to know that ferrets are not rodents. Ferrets will eat rodents. They need a high protein diet. They also find it a treat. It's fun to feed them the Linatone using a pet nursing bottle.
Ferrets can be adventurous at times when trying new foods.
Pretty much anything can be a treat for a ferret. Banana slices, unsweetened cereal, egg or whatever your ferret likes is ok as long as it is given just as a treat and not as their main diet. Chocolate is off limits because it's toxic and can result in death. They are also lactose-intolerant, so do not feed them dairy products. Bathing your ferret is very important because if you don't bathe them, they begin to smell very bad.