Star Dog
Wikisimpsons - The Simpsons Wiki
Star Dog is a comic book series sold at The Android's Dungeon & Baseball Card Shop.
History
Star Dog can be seen on a rack of comics when Bart and Milhouse are discussing the differences between Radioactive Man and Radiation Dude.
The cover shows a brown dog, with yellow stars on its fur, and a nose that is either glowing, or shooting some sort of laser.