I have a 7year old rottweiler alsatian cross dog he has been feed on a dry mix food all his life ( super dog 3 ) he has thrived on it. He has been a very healthy dog all his life but over the last month or so he has developed a voracious appetite for raw potato's, while there does not seem to be anything wrong with him outwardly i was wondering if he may be suffering a defficiency of some kind

Hi, Russ,

If your dog has always been fed a high quality commercial diet it is unlkely that there are any mineral or vitamin deficiencies.
It may be that at some time you have given him extra attention when he has been consuming his raw potato, and it has become an attention attracting device!
I suugest that for the time being you TOTALLY ingore him when he shows any inclination to find or eat a potato.
He will probably get fed up with it if it does get the result he seeks
W