A young boy lets the animals out of their cages at the Zoo, to set them free, but the animals start taking over the town.
Jay North
as Chris Carlyle
Martin Milner
as Dr. Del Hartwood
Andy Devine
as Branch Hawksbill
Joyce Meadows
as Isobel Moon
Jim Davis
as Adam Carlyle
Dorothy Green
as Anne Carlyle
Karen Green
as Wilma Carlyle
Vaughn Taylor
as Councilman Pew
Wayne Thomas
as Newscaster
Eddie Quillan
as Man Watching TV
Percy Helton
as Mr. Richardson
Jon Lormer
as Judge
