LOS ANGELES, June 23 -- 'How to Train Your Dragon,' a live-action reboot of the popular 2010 animated film, set the North American box office ablaze again in its second week, industry estimates showed Sunday.

The family-friendly film from Universal and DreamWorks Animation tells the story of a Viking named Hiccup (Mason Thames) who strikes up a friendship with Toothless the dragon.

Its US$37 million haul was enough to beat out Columbia Pictures' zombie sequel '28 Years Later,' which took in US$30 million despite coming nearly two decades after the last release in the trilogy, "28 Weeks Later."

"This is an excellent opening for the third episode in a horror series," said David A. Gross of Franchise Entertainment Research.

"The weekend ...