The Dragonsitter Takes Off by Josh Lacey - old paperback
Dear Uncle Morton, Ziggy won’t move from the linen cupboard. He still hasn’t eaten a thing. Not even a Malteser. I’m really quite worried about him.
Eddie had thought that this time dragonsitting would be easy – until Ziggy disappears, only to be found in the linen cupboard, refusing to budge. But moving Ziggy is the last thing on Eddie’s mind when he learns that his uncle’s dragon has been keeping a big secret . . .