J.K. Rowling’s companion book Fantastic Beasts and Where to Find Them was first published in 2001.
The book is presented as a Hogwarts textbook by Newt Scamander, a fictional magizoologist. Its first edition was published for charity, with proceeds supporting Comic Relief. The text includes descriptions of magical creatures and notes attributed to Hogwarts students, giving it the appearance of a school copy marked up by readers.
Fantastic Beasts and Where to Find Them is separate from the later film screenplay series. Rowling wrote the screenplay for the 2016 film Fantastic Beasts and Where to Find Them, which expanded Newt Scamander into the central character of a cinematic story.
The companion volume was published alongside Quidditch Through the Ages, another charity book connected with the Hogwarts world. Both works extend the fictional library beyond the seven main novels.