I've been owned by ferrets before - ferrets are better in multiples rather than singly. Their natural mischeivousness works better when they've got a cohort for their 'crimes'. My ferrets treated my cat like a big stuffed play toy - they would grab the (adult) cat by the scruff of his neck and try to drag him away (unsuccessfully). The cat was usually amused, rather than annoyed by this, and I'd regularly find the ferrets curled up asleep in between the cat's legs :-).
I've never tried a ferret and a dog together. IMO, a lot would depend upon the breed of dog.
My ferrets were never too aggressive, just an occasional nip that didn't break the skin and only barely hurt. Some ferrets can be somewhat aggressive, though. My ferrets always loved to hide behind something and ambush-tackle my ankles as I walked by.
The one thing to keep in mind regarding ferrets is that, by nature, they like to get into things and steal things. I'd regularly find my key ring hidden behind the bed or similar places. My ferrets had pretty much full run of my house, but I had taken steps to make sure they couldn't get into trouble (e.g. cleaning supplies somewhere that the ferrets can't reach, all the doors and windows secure so that the ferrets couldn't get out). |