Because you can get the exercise you need from walking your dog vigorously, running with your dog, doing some push-ups at home, or just playing.

WHITEHOUSE: President's Council on Fitness, Sports & Nutrition

The 35-year-old mother was at home, her six-week-old daughter had just fallen asleep and her husband called to say he was running late and couldn't pick up their dog from the day-care center.

WSJ: Where Dogs Rule the Roost

In the picture book category, Rebecca Cobb - who has illustrated books by The Gruffalo creator, Julia Donaldson - has been shortlisted for Lunchtime, while Chris Haughton features for a second year running with Oh No George, about a dog who tries very hard to be well-behaved.

BBC: Beavis and Butthead writer up for children's book prize