These 12 Biggest Spiders are What Nightmares are Made of

Colombian Giant Black Tarantula

The Colombian Giant Black tarantula’s scientific name is Xenesthis monstrosa, which was derived from the term monster, considering its monstrous size. Its leg span can reach up to 9.1 inches. Though mostly black in color, it is covered in brownish hair and reddish marking. They are also very aggressive when it comes to hunting prey, but are harmless to humans. For a spider hunter, they are also sadly very rare to find.