Bump on bridge of nose

Two days ago I came home from work and found my 18 year old minature poodle (who is housed in the garage while I am at work) with a bump on the bridge of his nose.  He also has a small wart on it and it was bleeding. (It was not bleeding before I left for work).  I thought that he must have bumped himself, but the bump has not gotten any better or any worse.  My husband thought that perhaps a spider bite him.  It does not bother him at all if I touch the bump.  He shows no outwards signs that anything new is bothering him. Any ideas of what it could be?

[Lizm55]

Good news, his bump is going down!

[chicky2001]

You are so lucky to have an 18 year old poodle.  Mine died much sooner.  I would take the baby to the doctor.

[chicky2001]

It could be cancer and dogs really don't show the pain they are having.  I hope he is still eating and drinking.  Maybe the garage isn't such a good idea.
Beautiful little dog.  I wish I had him.