Foursquare has finally made itself useful—to non-humans, anyway. As seen in the video below, a pet-food company in Germany has put up a billboard urging you to check in at the location on Foursquare—and in return, it spits out some dog food for your best friend to nosh on. This is a step forward for Foursquare, which is not known for providing much nourishment to really any living thing. In terms of ads that appeal to dogs, there's actually somewhat of a proud history there. Last year, we wrote about dog-food-scented ads on U.K. sidewalks, designed to lure pooches (and their owners) over for a sniff. But our favorite is still the 2001 campaign for Animal Planet, also in the U.K., which featured lamppost ads that smelled like urine. They brought over the dogs, and then the owners were presented with companion ads at human-eye height promoting Animal Planet programming. Via Mashable.