Here is my guess. Because this song is titled 'Rain Dogs' the contextual media buy purchased for Cesar decided that people viewing the whisky fueled genius that is Tom Waits probably have tiny little manicured and well groomed pets hungry for a little nibble of 26 essential nutrients.
Normally I would write a paragraph rant about how this is bullshit but I think everyone would agree with me. Another online contextual advertising fail.
