Dragon cave was more fun when there were fewer people on and getting "rare" eggs was easier, IMHO. This guy is a "strange markings" egg (which also describes the blue swirly egg). They can be gotten in the abandoned pile much of the time.

I'd be happy to try and give you a silver (I have several); it involves me abandoning the egg and you picking it up right at the same time and seems almost impossible to me. :P

New arts soon!