What is a ducagon?

When is the rainbow dragon available in DragonVale? How do you know Ichthyosaurus was a reptile? Which meat eaters are bigger than Tyrannosaurus Rex? Are triffids real? How come scientists are trying to bring back dinosaurs? How big was seismosaurus? What predators are there on Snowdon? How do you breed a lichen dragon? What are the different kinds of dinosaurs? When dinosaurs sleep do they lay down or stand up? Where can one find ideas for decorating a dinosaur for Christmas? Why are dinosaurs described as lords of the earth? When were dinosaurs found? Why did the triceratops die? How the dinosaur dinosaurs see? What did the stegosaurus dinosaur use its spikes for? What are the monsters called in the movie pacific rim? Which dinosaur has a walnut sized brain? What kind of habitat did the triceratops live in? How discovered ankylosaurs?