We are in the far north of somewhere, where it's freezing and rains for most of the year. As if the weather isn’t bad enough, the sturdy Viking community of the island of Berk have a pest problem - not mice or foxes, but feral dragons who, with their huge talons and fiery breath, steal their sheep and set fire to their houses as they attack on a regular basis. The opening scenes of How to Train Your Dragon, presented by DreamWorks Animation SKG (Shrek, Madagascar) in 3D, which portrays such an attack, are certainly vivid.