John Hurt

Snitter (voice)

Christopher Benjamin

Rowf (voice)

James Bolam

The Tod (voice)

Nigel Hawthorne

Dr. Boycott (voice)

Warren Mitchell

Tyson / Wag (voice)

Judy Geeson

Pekinese (voice)

Patrick Stewart

Major (voice)

Brian Stirner

Laboratory Assistant (voice)

Penelope Lee

Lynn Driver (voice)