"Wildlife biologists believe that black-footed ferrets released into the wilds of Colorado are thriving ? and breeding ? as the state tries to build a self-sustaining population of the mammal considered to be the rarest in North America."

http://news.yahoo.com/s/ap/20050917/ap_on_sc/black_footed_ferrets;_ylt=AuKBQ79gT56a8vb35jo69kpxieAA;_ylu=X3oDMTA3MzV0MTdmBHNlYwM3NTM-

An example of conservation laws resuscitating a species once thought extinct.

Predators keep the balance. Will the ferret survive in North America, or will it become extinct?