This is the seventh of 43 appearances Arthur Space makes in the series, each time appearing as Doc Weaver, the local veterinarian. He takes over for Doc Peter Wilson, who is played by Frank Ferguson in season one.
This is the first of three appearances the very prolific character actor Strother Martin makes in the series, each time playing the role of neighbor farmer Lem Boots. He is perhaps best remembered for his role as the prison warden in the movie Cool Hand Luke (1967). His other two appearances in this series occur in Quarantine (1956) and The Nest (1957).