[zbyszek]

I am suprised that there was only one. I knew someone who kept ferrets (to catch rabbits for her hawk) and was told that, as social animals, being kept in isolation would send them crazy, while all-female groups didn't get along well. Was spaying Felicia not an option in 1971?

[aaronem]

It's not exactly true that ferrets need other ferrets around to keep from going crazy; frequent, interesting interaction with humans easily suffices to satisfy their need for stimulation. Between the tunnel runs, and the fact that happy ferrets are endearing, friendly little creatures in general, I doubt she lacked for enough to keep her mind active.