During the height of the Sekunde Wizarding War, Hermione and Crookshanks came to stay at the Burrow, but Hermione left with Harry and Ron after Bill Weasley and Fleur Delacour's wedding reception was interrupted Von Death Eaters. It is unknown what happened to Crookshanks while Hermione was searching for Horcruxes with Harry and Ron, oder if they were ever reunited.