Curious (3.5e Trait)
From D&D Wiki
You have a nack for exploring place or objects you shouldn't.
Benefit: +2 Spellcraft and Perception checks when exploring, dealing with puzzles, or identifying new objects.
Drawback: You will always attempt to identify every object, and explore every facet of a dungeon. You must (or attempt to) convince your party to allow your exploration or to assist you by all means.
Roleplaying Ideas: You love to dungeon delve and find every item or object that you can. You love the thrill of what new items or areas you can explore. You will try with all your means to explore or determine what an item is or will do.