The new novel, as yet untitled, was snapped up for a reported $3m (1.8m pounds) in the US following a heated auction, with Canongate landing UK rights last week. Like Life of Pi, it will be an allegory involving animals – this time tackling the Holocaust via the medium of a donkey and a howling monkey. Jamie Byng, who will publish the book at Canongate in 2010, said it was "one of the most ingenious, heart-breaking and strangely beautiful books" he had read in years. "The absorbing pair of relationships that lie at the book's heart, one between a donkey and a howling monkey and the other between a writer and an elderly taxidermist, also make this one of the most original books I have ever read," Byng added.

The book will also, Byng said, deal with the very issue Martel himself is facing: the challenge of how to write another book when you've had a success "as unexpected and huge" as Life of Pi. Martel told the New York Times that he decided to tackle the Holocaust in this new novel because he felt that there was a paucity of metaphorical, or imaginative, works produced about it. "I've noticed over the years of reading books on the Holocaust and seeing movies that it's always represented in the same way, which is historical or social realism. I was thinking that it was interesting that you don't have many imaginative takes on it like George Orwell's Animal Farm and its take on Stalinism," he said. "My novel is an attempt to get a distillation on it, and see if there is a way of talking about the Holocaust without talking about it literally."