All Creatures Great and Small is a British television series, based on the books of the British veterinary surgeon Alf Wight, who wrote under the pseudonym James Herriot. In 1977, the BBC tasked producer Bill Sellars with the creation of a television series from Herriot's first two novels, If Only They Could Talk and It Shouldn't Happen to a Vet, using the title of the 1975 film adaptation All Creatures Great and Small. It occupied a slot in the TV week that the show helped solidify as Sunday evening fare. In the BBC documentary on the series, David Butcher of the Radio Times said, "At the end of the weekend you don't want anything too taxing, you want some kind of escapist, gentle, heartwarming, cozy kind of drama. A cup of cocoa drama. It's warm and simple and nice and lovely, and it's not going to frighten the horses." Robert Hardy remarked that, "It hit the right moment. There was a feeling still in the towns that the country was a glorious place inhabited by amazing people." TV historian Chris Diamond commented, "It's the perfect post-dinner, pre-bath time slot. You're going to be either hanging about in the living room trying to avoid dishes, or waiting to have a bath."