i am thinking about getting a lurcher for ferreting and lamping it will be mostly on stubble and new grown crops.talking to a guy the other day and he has got whippet/grey/collie she is brill still does a few runs on rabbits.
the best thing to do is just introduce them to each other slowly and it also dependes on what temperment the ferrets are i have got five ferrets they are alright with my terrier except one