13. Shetland Sheepdog (Sheltie)
When Calvin Coolidge was US President during the 1920s, he and wife Grace kept a veritable zoo at the White House. Among the menagerie was a white Sheltie called Calamity Jane - so named because she needed a bath every day.
From food & drink to decorations and presents, here’s the vet’s expert guide to keeping your pet safe this Christmas.