How big should a 17 month old yellow rat snake be?

[poomwah]

I told the breeder I was really concerned about the snakes size.
He assured me that it is indeed a 2012. And said:
"You definitely received the right snake. Yellow rat do run a bit small than black rats both in length and girth, but aside from that our snakes our not powerfed. They do well for us on a once a week to every ten day schedule. We seem to grow them up at similar rates that I observe in wild rat snakes in my field work down here"
a BIT ???? lol