Can anyone help me identify this painting?

I was recently looking through a cool art blog on tumblr (I don't have an account, if you're wondering; I just occasionally look through art blogs there), and saw an old oil painting I really liked.  Unfortunately, the only photo of it is small and of poor quality.  Wanting to see a larger/better image of it, I tried searching the title and information the blogger had provided, but it turned up no results.  I also tried using Google's "search Google for this image" function, but the only result it found was the same poor quality image I had searched for in the first place.  Other art blogs featuring this painting all linked to this same poor-quality version.

Here is the image: snucm61us.net/creativity/mytho…

Even the information given about the painting's title and what museum it's housed in is conflicting.  The blog I found it at gives this information: "Venus and Adonis, 1650, Museum inside Castello Sforzesco, Milan, Italy"
But other blogs listed it at different museums, and none identified an artist.  The only things that seem to be agreed upon are 1) that the painting depicts Venus and Adonis, and 2) it is from the mid 1600s.

Since I can't seem to find a better photo of this painting or any information about it, I've decided to make this journal asking about it.  Maybe someone here can at least tell me what its title is, or who painted it?  Any information is helpful.