Hermione Granger completing Snape's homework assignment from the class, while Crookshanks proves vital in exposing Scabbers as Peter Pettigrew, a friend of James and Lily Potter who revealed their whereabouts to Lord Voldemort the night of their murders, and was able to wrongly implicate Sirius Black (revealed to be Harry's godfather) in the Potters' deaths. The Time-Turner enables Hermione and Harry to rescue Sirius and the hippogriff Buckbeak. Hermione is horrified by the cruelty that house-elves suffer, and establishes S.P.E.W., the Society for the Promotion of Elfish Welfare, as an effort to gain basic rights for them. She is Bulgarian Quidditch prodigy
Harry Potter clinical teaching, and Joyce Fields wrote that the books illustrate four of the five main topics in a typical first-year sociology class: "sociological concepts including culture, society, and socialisation; stratification and social inequality; social institutions; and social theory". From the early 2000s onwards several news reports appeared in the UK of the Harry Potter book and movie series driving demand for pet owls and even reports that after the end of the movie series these same pet owls were now being abandoned by their owners. This led J. K. Rowling to issue several statements urging Harry Potter fans to refrain