Director/a
George Inger
DIRECTOR/A
Robin Hellier
Douglas Thomas
Peter Crawford
Keith Hopkins
David Kennard
David Pearce
Moira Mann
Christopher Lewis
Brian McDuffie
Brian Skilton
David Turnbull
Caroline Weaver
John Downer
Paul Appleby
Jeffery Boswall
Reparto (por orden de créditos)
Johnny Morris
Self - Presenter
Keith Shackleton
Tony Soper
Self - Reporter
Terry Nutkins
David Taylor
Sheila Young
Gerald Durrell
Self
Roger Tabor
Norman Carr
Robert Gilmor
Harry Secombe
Stephen Sutton
Cathy Kilpatrick
Michael Boorer
Jim Wright
Ken Williams
Frank Guttfield
Idris Hale
Jim Allcock
Mervyn Cowie
Eric Ashby
Sven Berlin
Michael Carr Hartley
Carr Hartley
Roger Upton
Sophie Neville
Mike Colbourne
Self - Zoo Keeper
Krov Menuhin
Ann Menuhin
Phil Drabble
Debbie Dent
David Shepherd
Molly Badham
Peter Hardy
John Aspinall
Michaela Denis
Simon Ward
Bill Oddie
Michael Bentine
Henry Williamson
Dafila Scott
David Attenborough
Tom Baker
Paul Daniels
Patrick Moore
Toyah Willcox