The Most Dangerous Object Sold In Harry Potter's Hogsmeade

Generally, the place to go for the really dark and gritty is the Hog's Head Inn, owned by Albus Dumbledore's brother, Aberforth Dumbledore. The Hog's Head Inn is where Professor Trelawney spoke the prophecy about Harry Potter, and later on, it's the place where Hogwarts students recruit soldiers for Dumbledore's Army. With a shadier reputation than the Three Broomsticks down the road, it's a place Hogwarts' groundskeeper Hagrid loves to frequent.

The more perilous items offered here aren't on the menu, but that doesn't stop the patrons from selling them or using them as collateral. The most dangerous item that we know traded hands there is a Norwegian Ridgeback dragon egg. With venomous fangs, the ability to breathe fire, and an affinity for snacking on large water mammals, you don't want to mess with a Norwegian Ridgeback. 

Hagrid has a habit of falling in love with and taking care of any creature no matter how dangerous, even dragons. In Harry Potter and the Sorcerer's Stone, Hagrid hatches the dragon egg and names it Norbert. Harry, Ron, and Hermione find out and convince Hagrid to send him to Romania, where Ron's brother Charlie Weasley works with dragons. The egg-shelled Norbert (later renamed Norberta) appears to be the most dangerous item sold in Hogsmeade. Of course, in the world of Harry Potter, it's entirely possible that something even more outlandish changed hands in the sleepy town.