I got my first rat snake about 6 months to 9 months ago. I feed him right at 2 pinkies a week. I havent done exact measurements but im guessing he is a little over around a foot. He was tame at first, then got skitish and is now calm. From my brief history and slight knowledge i know they have aggression issues but you take the good with the bad. Its all about handling and care of them. Good luck!

I did have a adult Tex Rat that was bought from Siegel Reptiles out of FL for a short while. He was around 4 foot and the most agressive i have ever had, striked at the tank just for walking by.