You really don't have to train your ferrets to hunt house mice, it should be a natural instinct for them to kill the mice. Also, just the smell of ferrets should keep mice away.
A ferrets will chase any rodent (mice, rats, rabbits)
Mice form part of the wild polecat's diet, meaning that while eating them will present a slightly increased chance of your ferret contracting disease from the mice (they may also get fleas), it will be safe enough to not worry about. I suspect that, if you keep ferrets and have mice in your home, it'll be almost impossible to stop the ferrets eating them!
Yes. Jack Russells were bred to hunt foxes, mice, rabbits etc. You can train a JRT to hunt ;) Mines more of a digger !
Yes, they could, ferrets are very susceptible to illness and disease.
owls and other birds hunt mice
Ferrets fur is different from a mouse. Ferrets are in the weasel family same as minks and ermines. Mice are in the rodent family and not related to ferrets
I have read that the scent of a ferret (and also ferret poop) would drive away mice and rats. As someone that has the seasonal intrussion of field mice into our house, and also has a house full of ferrets, I can tell you that they are NOT scared away by the scent of ferrets...at least not the domestic ferret that people keep as pets. I run a ferret shelter, and have had up to 45 ferrets in the shelter at one time. Each fall and winter, we get an influx of field mice in the shelter itself as well as the main house. We have ferrets that have free run of the house, and this does not deter the mice from stealing food from their bowls.
Dogs, cats, rats, mice, ferrets
Domestic ferrets possible predators would be hawks, owls, or any larger carnivorous mammals would hunt them given the opportunity. Black footed ferrets natural enemies includes coyotes, great-horned owls, golden eagles, prairie falcons, badgers, bobcats and foxes.
House Mice
Usually any cat food they are given, though some are finicky. If there are mice in the house they will hunt them, but may or may not eat them.
No. Ferrets are natural predators of rodents like rats and mice.