In the BFI’s “British Screwball” list, the film The Horse’s Mouth (1958) features a scruffy terrier that has more screen chemistry with the female lead than the artist protagonist does. The BFI’s essay on the film notes that the dog’s constant interventions—stealing shoes, vomiting on rugs, demanding walks mid-kiss—act as a pressure valve. The audience laughs at the frustrated couple, but the dog’s presence also forces them to prove their commitment. If they can survive the dog, they can survive marriage. In this way, the animal becomes a trial by fur.

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