Twins Eddie and Izzie love animals. They want to look after ALL the school pets in the holidays - but the only one left is the grumpy lizard. The lizard cheers up once he goes home with them and eats the food he likes - they name him after his favourite. Then Cornflake grows two bumps on his back, which gradually turn into wings . . . He's really a dragon!

The twins know they have to keep such a rare animal secret, but it's hard in a small flat, especially when Cornflake starts breathing fire. Then a man turns up asking awkward questions and they really start to worry . . .

Ruth Symes has written many novels and picture books, including the LITTLE REX and BELLA DONNA series for Piccadilly Press. She also writes dog books under the pseudonym Megan Rix, for Puffin, including the bestseller, THE PUPPY THAT CAME FOR CHRISTMAS. She was a resident writing coach on The Richard and Judy Show and was a judge on their Write a Children's Short Story competition. Follow Ruth at www.ruthsymes.com or on Twitter: @ruth_symes.