FRom my time at BugWorld, before I looked after the animals: a Deathstalker Scorpion (Leiurus quinquestriatus. A Buthid scorpion with a sting that's bad news for humans. That said, most venomous animals I've worked with are laid back as long as they're not provoked, and there's really no need to handle them and risk being stung.
Our Indian Ground Beetles (Anthia sexguttata) caught in the act. The male on top is marked with an extra spot, because he's the first of his species to be born in captivity - a massive achievement for any zoo to be credited with :)