Hedley Griffin 
Dangerously Big Bunny [PDF ebook] 

Supporting the TOAST obesity awareness programme. Harey, the hare-brained rabbit, watches TV all day and eats all the wrong foods. He becomes unhealthy and overweight. He has trouble getting through doorways, too overweight to play on the swings, breaks his skateboard, and sinks the boat in the park. His doctor puts him on a diet. He cuts down on eating biscuits, sweets, chocolate toffee bars, cakes and ice-cream, joins a gym and watches less television. He is soon back to his old fit self. 'Who’s a pretty boy, then?’ says his friend, Pillow the parrot.