Corn snakes tend to have very.. bright colorations while rat snakes are less subtle most of the time.
What everyone says about corns being a type of rat snake is true. :]
As for the egg thing, I doubt that. Unless they're referring to a much larger species of rat snake eggs in comparison to normal corn snake eggs I don't think so.. let me look it up..
Well I'm learning something new. According to wikipedia:
All snakes by the species name of '
Elaphe' are rat snakes. Including '
Elaphe guttata' which is the scientific name of a corn snake.
Apparently there are lots of different kinds!
http://en.wikipedia.org/wiki/Rat_snake
Some are tubular...and some arent...but I think it depends on the species actually...not just whether it's a ratsnake or corn...
Can't seem to find anything about the eggs. Anyone bred rat snakes?