What Colour Are Warts Or Cysts On Dogs Pimple? That Wont Go Away...please Help!?

Pimple? that wont go away...please help!? - what colour are warts or cysts on dogs

even if I bump it on the nose ... I thought it was a first key when I ... Pus came out and left me alone, but when he healed the package was still there ... I'm there for a few months and do not know what it is ... I thought it would be something like a wart or a cyst ... idk colored flesh. Do you know something that they can bring to disappear? Or do you have the slightest idea of what can be?