At Gryphon\u2019s Pub in New Haven it\u2019s all about who you know \u2013 just make sure they go to Yale. The New Haven social club last month made Yelp\u2019s list of the \u201cTop Dive Bar in Every State,\u201d taking honors for the Nutmeg State, despite being exclusively a home for bulldogs. It\u2019s an unusual honorific for the 50-year-old pub. While all dive bars are not created equally, they often feature a few (if even vaguely so) aspects in common. Dim lighting and cheap drinks combined with no-nonsense bartenders (not mixologists) are oft-sighted dive bar staples. So offering free beer \u2014 like Gryphon\u2019s Pub is wont to do \u2014 can give a divey bar a leg up (or at least a few extra coasters to balance that wobbly stool). But one thing that usually separates your dives from your more upscale haunts is exclusivity \u2014 or the lack thereof. But that\u2019s not the case at Gryphon\u2019s, where you have to be a student at one of the world\u2019s most exclusive universities, the Ivy League\u2019s Yale, to get in. The bar has cheap drinks covered. Its current menu, updated Oct. 25, doesn\u2019t list a beer or wine over $5. And its known to throw weekly parties where free beer pours until it runs out. The caveat is, you must be a Yale student to get into the pub. If not, you at least have to know a student who can bring you in. You then have to sign a guestbook. Gryphon\u2019s Pub, 204 York St., is housed in a 99-year-old building that was built for Yale\u2019s Beta Theta Pi fraternity. The building also houses Yale\u2019s Graduate Professional Student Center. According to the website, Gryphon\u2019s Pub considers itself not a bar, perse, but a social center that operates a student-run bar. Yelp didn\u2019t give any of runners up, but said the list was compiled from a list of businesses in its \u201cdive bar\u201d category. They were then ranked according to factors like volume and ratings of reviews. Yelp also said the bars had a passing health score as of Oct. 17.\u00a0 Duff\u2019s Brooklyn in New York and Biddy Early\u2019s in Boston took honors in nearby New York and Massachusetts, respectively. Those bars, however, don\u2019t have the same membership requirement.