In 1897, people found gold in the Klondike, Canada. Thousands of people traveled there to find more gold. They needed big, strong dogs to work for them. This is the story of one of those dogs, Buck. A man takes him from his family in California, and Buck has to pull a sled in Canada. Will he survive? Penguin Readers is a series of popular classics, exciting contemporary fiction, and thought-provoking non-fiction written for learners of English as a foreign language. Beautifully illustrated and carefully adapted, the series introduces language learners around the world to the bestselling authors and most compelling content from Penguin Random House. The eight levels of Penguin Readers follow the Common European Framework and include language activities that help readers to develop key skills. The Call of the Wild, a Level 2 Reader, is A1+ in the CEFR framework. Sentences contain a maximum of two clauses, introducing the future tenses will and going to, present continuous for future meaning, and comparatives and superlatives. It is well supported by illustrations, which appear on most pages.