My son wants to be a biologist\zoo keeper so me take very frequent trips to the National Zoo. Seeing the same exhibits over and over again have become much more palatable once the zoo started serving craft beer. Yes, it's expensive, $7 a beer, but one or two makes the stroll more enjoyable. On our latest trip, Yuengling Lager, Sam Adams Summer Ale, and Starr Hill Brewing Northern Lights were available in the Panda Market and the first two were also available in the Mane Grill. The Sam Adams Summer Ale and Heavy Seas Brewing Company Loose Cannon were also available at the Hot Dog stand across from the small mammal house. At this same stand on a previous trip, they were pouring the Flying Dog Brewery Pale Ale - so local beer is a presence. If all else fails, I usually find myself at the Zoo Bar Cafe - across from the Zoo entrance on Connecticut avenue. Not a great selection, but a few of the heavy players are available. Cheers.