What breed of dog was Rusti on Glen Michaels Cavalade?

Rusti, the dog on "Glen Michael's Cavalcade," was a mixed breed, often identified as a cross between a Labrador Retriever and a Collie. He became a beloved character on the show, known for his playful and friendly demeanor. Rusti's charm and antics contributed significantly to the show's appeal, making him a memorable part of Scottish television history.