Henry Hollins and the Dinosaur by Willis Hall
Henry Hollins finds an egg. Believing it to be that of a dinosaur, he smuggles it home but the BBC pronounces it a fake. It hatches however, and the dinosaur remains a secret until carnival day when it heads along the motorway towards the sea with Henry on its back. The author has also written The Inflatable shop, The Last Vampire, Dr Jekyll and Mr Hollins and a television series for Granada, The Return of the Antelope.