the way our coop is made there was no way for a rat to get in, in hte last 4 year living in south west kansas i have never seen a rat, i know that we have bull snakes around but there mostly in the back of the farm where the creek is.....my coop is 9 ft in length 2 ft tall and 2 ft wide, it was built 2 ft above ground , i have since moved my chicks in to the coop since the c x are gone and nothing has happend to them, i'll try to post a pic of that the coop looks like at some point of the day.