Purple Spot In My Penis Do Not Hurt My Dog Has This Nasty Bruise Right Next To His Penis?

My dog has this nasty bruise right next to his penis? - purple spot in my penis do not hurt

I am very worried, and I'm going tomorrow to the vet, but I just wanted to see if I get an idea of what can get it. I am prepared for the worst, but I hope it will not be reduced.

I went to school in the morning filling out paperwork for the new semester and I have my one year old Chihuahua / Dachsund at home with his sister (POM / Lhasa as one years old) and my older brother was outside fixing cars. I have the baby carrier on the first step, so that they can run and play on. You may, if they are not at home.

Well, when I got home, I met my dark side mix Chi / Dachsund and was about as big as a cent and was blue. I recently spilled some blue ink and quickly extinguished, butI thought that might be identified. But about an hour later, the wound had turned blue and had a kind of red stain in the middle.

It does not seem to hurt when you touch your skin is always the same, not windy or the like. I can freeze some for him, but can not improve. That does not bother you that I do not see him licking or scratching. I read on the Internet, can internal bleeding, cancer, all sorts of things.

Have you ever experienced something that no one else like that? Has anyone an idea of what might be?

I add pictures so you can see. What is so great, and his penis, so do not take offense.
HTtp: / / i526.photobucket.com/albums/cc343 ...
http://i526.photobucket.com/albums/cc343 ...
http://i526.photobucket.com/albums/cc343 ...
http://i526.photobucket.com/albums/cc343 ...
http://i526.photobucket.com/albums/cc343 ...
http://i526.photobucket.com/albums/cc343 ...

I am very concerned ... any help would be appreciated.
Thanks in advance!