Season: 2
Original Airdate: December 29, 1967
Writer(s): David Gerrold
Director(s): Joseph Pevney
Guest Stars
William Schallert as UnderasSecretary Nilz Baris
William Campbell as Captain Koloth
Stanley Adams as Cyrano Jones
Whit Bissell as Station Manager Lurry
Michael Pataki as Korax
Ed Reimers as Admiral Fitzpatrick
Charlie Brill as Arne Darvin
Paul Baxley as Ensign Freeman
David L. Ross as Guard
Guy Raymond as Trader
Stardate: 4523.3
Synopsis: Fuzzy little creatures who multiply rapidly cause problems on the Enterprise.