Just like cats and dogs ferrets have baby teeth. When they are loosing these teeth they will chew a lot on dangerouse things, including your toes. By seven to eight months they should grow out of this stage and not bite. On occasion ferrets do nip and some just have a down right mean temper JUST LIKE SOME CATS OR DOGS! You have good ones (which most are good) and you have your bad ones (which we all know hardly exist!:)
Ferrets should go to a vet at least once a year for a check-up, rabies and canine distemper shots. Ferrets can die from canine distemper and rabies.
In general ferrets are not a carrier of rabies. It is VERY uncommon for a ferret to contract rabies unless bitten by an animal already infected. However please do have the shots given to your ferret before this can happen. Ferrets will in fact die from rabies. Some states will confiscate a ferret that has bitten or nipped someone and DESTROY it for rabies testing. You have a far better chance of saving your ferret if you have a proof of shot records handy.
It's astonishing how many people get attacked by cats and dogs EVERY DAY and never report these incidents. When a ferret gives a small nip by accident while playing it's usually all over the news and ferrets are pegged as wild and evil beasts. I can assure you in general this is not the case at all.
I've had ferrets for a number of years and have had no problems. I am no expert of ferrets and do not claim to be but this is what I know from personal expirience.
If you have a home with children it is advised to keep ferrets caged when you can't watch them. Never leave an animal alone with a small child as it can be traumatic to the animal and/or the child!!! I would never have a cat roaming around my house with infants or small children, cats bite more often than a full grown ferret normally would. Full grown ferrets usually do not bite.
If there's anything that I left out and should be brought to attention please Mail me!