When the hair plucked from the robes of Slytherin student Millicent Bulstrode turns out to be that of her cat, Hermione finds herself transformed into a human cat. It takes several weeks for the effects to completely wear off.

Hermione's name is taken from the virtuous and beautiful Queen of Sicily in William Shakespeare's The Winter's Tale.

She inherits Dumbledore's personal copy of The Tales of Beedle the Bard, which allows her to decipher some of the secrets of the Deathly Hallows.

Hermione buys a cat named Crookshanks who takes to chasing Ron's pet rat, Scabbers.

Hermione stops fraudulent tabloid reporter and unregistered Animagus Rita Skeeter, who had published defamatory material about Hermione, Harry, and Hagrid during the Triwizard Tournament, by holding her Animagus form (a beetle) captive in a jar.

Hermione uses Polyjuice Potion to impersonate Bellatrix in order to steal Hufflepuff's cup from Gringotts and destroy it.

She is Bulgarian Quidditch prodigy Viktor Krum's date at the Yule Ball of the Triwizard Tournament.

Emma Watson portrayed Hermione in all eight Harry Potter films.

Rowling has stated on multiple occasions that the character of Hermione is somewhat autobiographical: "I did not set out to make Hermione like me but she is ... she is an exaggeration of how I was when I was younger."

She is involved in the battle in the Department of Mysteries and seriously injured by a spell from Death Eater Antonin Dolohov, but makes a full recovery.