Don't people use ferrets for rabbiting - ie sending them down rabbit holes to kill the rabbits and bring them out? By this I don't mean pet ferrets as such but the ones kept by people for hunting with.

I also found a web page which said that rabbits are the main prey of ferrets (wild ones I assume) surely keeping them together would be like keeping a zebra and a lion in the same enclosure.

I have never heard of them "getting on" and it seems strange to me to keep a carnivore with a herbivore like that.