Changing any pets food might cause sickness, but specifically I don't ferret food would unless you feed it to your dog continuously. Ferret food is nutritionally made for ferrets only, which is different from dogs nutritional needs.
Very high protein food (like high-end cat food) can and will cause kidney damage in your pooch. Ferret food, not so much, as it's not the same but does contain a lot of meat products as does quality dog food.
However, it can certainly make the pooch feel terrible, just like suddenly changing dog food. There is a process to switch foods, and as above, optimum ferret diet is not the same as an optimum dog diet.
In a few words, "Yes, it can make your dog sick." Monitor his fluid and normal food intake. Keep him away from the ferret food. If all doesn't return to normal in 24-36 hours, take him/her in to your primary Vet.
Life.
Will do no harm, I have a cat that eats Dogfish heads.
No...not even if the dog eats one.
It sounds like your dog is playing by mouthing with your ferret. Mouthing and biting is how they learn as puppies playing with other puppies. There are variations in a dog's behavoir depending on the breed. Remember that a dog can kill a ferret very easily, even if he's only playing. Your dog needs to be trained that this is unacceptable behavoir with your ferret, otherwise you need to keep them separated. A ferret can bite pretty hard and may bring out instinct in your dog to harm your ferret. Never leave a ferret unsupervised with any other animals.
Yes, ferret cologne would be safe to use on your dog
Yes, it would be safe to wash your dog in ferret sheen.
NO Your ferret will die it's DOG FOOD not ferret food
As long as the ferret ate a little, it will be okay. A ferret fed dog food continually will die. Ferrets need to be fed ferret food only.
If your dog eats a battery, you should seek immediate veterinary care. Batteries can be toxic and cause serious harm to your dog's health. Do not induce vomiting or give any home remedies without consulting a professional.
I would use products for ferrets only, dog products may be harmful for a ferret.
If a dog eats a battery, it can cause serious harm to the dog's digestive system. The battery's chemicals can leak and cause burns or blockages, leading to potential life-threatening complications. It is important to seek immediate veterinary care if a dog ingests a battery.
Dogs are carnivores. Depending on the size of the dog a lamb shank bone should cause no harm.