Julian Norton treats a cow with a rare and complex problem. The cow's stomach has become displaced and moved to the wrong side of her body, causing pain and stopping her eating. Meanwhile in Thirsk, a baby roe deer is brought into the practice as it has stopped taking milk, and a dog has a large tumour removed in a tricky operation.

Festive edition of the documentary inspired by the classic Christmas song, beginning as vets Julian Norton and Peter Wright encounter 12 huskies, followed by 11 braying donkeys and so on. The countdown of patients also includes feisty ferrets, running reindeer and ends, of course, with a poorly partridge - although whether it is in a pear tree remains to be seen.