Quote Originally Posted by dragondawg
Nasty looking little thingy. If you haven't already, you might want to examine the mouth, and under the tongue for any other growths. Obviously the absence of other growths is a positive sign.

Oral cancers tend to occur in much older dogs. That's not to say they can not occur in puppies, but it's extremely rare. The most common oral growth in dogs is focal fibrous hyperplasia - which translates to hyper accelerated growth of the connective gum tissue in a localized location.
That sounds pretty much like what I was reading about epulis. I have looked really closely at the rest of her mouth and don't see anything else suspicious, so I think, (hope and pray) it is just localized to that area.

I wish I could have it looked at right now... the unknown is the worst of all