The ability of a dog to learn from humans has often been linked to its intelligence. Using the dog breeds topic from PetBreeds and data from The Intelligence of Dogs by UBC psychology professor Stanley Coren, we found and ranked the 17 least intelligent dogs by obedience intelligence.
Decades later, in 1945, Dumbledore finally defeated the now-Dark wizard Grindelwald, who had come to possess the Elder Wand. Grindelwald's defeat made Dumbledore the master of the Elder Wand, which remained his until just before his death, when Draco used the Disarming Charm on him.
When Harry, Hermione, and Ron returned to Hogwarts on 1 May, 1998 in search of a Horcrux, they were met by Neville and the remnants of Dumbledore's Army that had stood up to Snape and the Carrows. Acting on a promise to Ginny, Neville sent word to her (via the enchanted galleons) that Harry was at the school.