Upstairs, Downstairs (1971)

S5E5 Wanted: A Good Home

In the spring of 1922, as William heads off to Prep School, Rose surprises Alice with a new puppy to keep her company. However, when Richard and Virginia take a holiday, leaving Miss Treadwell in charge, tensions rise. Miss Treadwell attempts to get rid of the "filthy creature," prompting the entire staff to rally against her in defense of the puppy.