My dog nails on her back paw are bleeding internaly. What is this from?

I hope this does not get posted twice...  I just posted an answer but it is not showing up for some reason.

What makes you think that your dogs nails are bleeding internally?  More then likely, you are seeing the quik or blood supply to the nail its self in a lighter colored nail.   :-)

Most likely what you are seeing is the blood supply to the nail, called the "quik" in a ligher colored nail.   :-)

It is not the quick.  The nail itself right at the base is a dark red - purple, her nails are white.  She keeps chewing on this foot as well.  She also has one that is doing this on a front paw.  To me it looks like it is bleeding at the base inside the nail.  Can I email you a photo?