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.
âGellert Grindelwald's slogan. Gellert Grindelwald (c. 1882 - 1998) was considered one of the most powerful Dark Wizards of all time, second only to Tom Marvolo Riddle, who later became known as Lord Voldemort.He was schooled at Durmstrang Institute until his expulsion.n 1945, at the height of his power, Dumbledore confronted and defeated him in a legendary duel. Grindelwald was subsequently imprisoned in his own fortress for decades, and was slain there by Voldemort in 1998 when he refused to give up information on the Elder Wand.