Tuesday Quiz: Lion or Dog?

Behind the church of San Miniato Al Monte, up on a steep hill overlooking Florence, there is a huge city of graves. Many fabulous mausoleums stand on little streets like miniature houses in miniature neighborhoods. Many of the monuments are adorned with sculpture, while others feature small mosaic decoration. Anyway, I loved this creature on one just behind the church, but I can't decide: dog or lion?

What do you think?