hi mate i have a patty x lakey she will kill a ferret before it left the cage but i havent brought her up with ferrets best thing bring her up with an albino ferret drinking out of the same bowl as young both of them when she wants to play with it just say no she will get the idea reason i say albino ferrets the dog wont get mixed up taking it for a rabbit or rat bolting out fast got to start them young or would be hard work cheers DM