Their diet should also be supplemented with vitamins such as Ferretone or Ferretvite by 8 in 1 products. Remember that treats are just that, treats, and ferrets should be given them in very small amounts only. Ferrets eat many small meals a day due to their short digestive tracts. There should always be a supply of food in a bowl for them to eat on their own schedule. Feeding them dry food helps keep their teeth in excellent condition.
Canned food tends to go bad too quickly for the feeding habits of ferrets.
Ferrets should never be given any chocolate as you will find your ferret vomiting violently all night or perhaps dead. Chocolate is very toxic to ferrets. They are also lactose-intolerant, so do not feed them milk, ice cream, cheese or other dairy products, no matter how much they beg. Ferrets can ingest goat's milk since it contains little lactose. Things made from goats milk should be fine for your ferret.