Canadian author Farley Mowat, author of 'The Boat Who Wouldn't Float,' has died at age 92

Canadian author Farley Mowat, a master storyteller and tireless defender of nature and wildlife, has died. He was 92.

Stephen Smith, a friend of Mowat's, said he died Tuesday evening after collapsing at his house in Port Hope, Ontario. Smith said he couldn't confirm a cause of death, adding a family statement will be issued.

Mowat wrote some 40 books, many based on his own adventures and travels. They included "The Boat Who Wouldn't Float" and "Never Cry Wolf." He said he was lucky to be able to combine his two passions: writing and nature, calling the latter "the only subject I really want to write about."

Acclaimed Canadian novelist Margaret Atwood tweeted that Mowat was a "wonderful colleague & friend of many years."