At first glance, it appears to be the silhouette of a single dog. But here’s the catch—hidden within the outline are multiple dogs, depending on how you interpret the shapes.

Hot dogs are available at the Silhouette Lounge until last call every night, for $3.50 ($2 after midnight) with the purchase of a beverage, without the benefits conferred by a Sil tattoo.

At first glance, it appears to be the silhouette of a single dog. But here’s the catch—hidden within the outline are multiple dogs, depending on how you interpret the shapes.