The Tyger Voyage — Richard Adams

A gentleman tyger and his son set sail in a rather dubious boat into the unknown. Together they roam across the seas, through jungles, past ice-covered mountains and erupting volcanoes to be rescued at last by a troupe of gypsies. Eventually they return in triumph to Victorian England with many an extraordinary tale to tell.
First published in the US by Knopf in 1976, The Tyger Voyage was enthusiastically received both by the press and by readers, topping the Adult Bestseller list for several weeks In the years since, it has become a much-loved classic.