The hit show is named after the cutie that brought Ashley ( Harriet Dyer) and Gordon ( Patrick Brammall) together. Border terrier Zak plays Colin, with another dog, Buster, filling in now and then.

One dog’s delight is another dog’s distress. Especially when the television is on. Every evening, as the television flickers to life in living rooms across the world, many dogs plop down beside their ...