Cats will usually seek high areas to avoid ferrets or may choose to play with ferrets. Many dogs will ignore ferrets but others were bred to hunt small mammals. Be sure to closely supervise all interactions between ferrets, dogs and cats. Ferrets may play rough or attack birds, rabbits, gerbils, hamsters, or guinea pigs. Never leave ferrets loose with these animals.
Dog food lacks the fat and certain amino acids required by ferrets.
The cat food found in supermarkets or grocery stores is not acceptable since it contains fillers and dyes and is grain based. When reading the label, check to see that the first item is chicken, poultry or lamb. The second or third item should also be one of these meats. Many people purchase a ferret that was altered when the kit was very young. There is much controversy about altering a ferret before it has had a chance to fully mature.