lots of pet owners chip their ferrets....
if they do get out..... who will joe public phone?....
well, once they have trapped your ferret under a bucket...
they will ring the ARSEpca.... who will come with welding gloves and cart the stinker off to be scanned...or you would hope
chipping can mean you get a quick reunion with your ferret....if the right procedures are carried out....
would they help against theft? probably not.....
somebody who steals ferrets....also has zero respect for them....so is unlikely to visit a vets....
out of sight....you ferret cant be