Out of courosity I looked at snakes of Tx and I stand corrected,the Tx Rat Snake is the largest as well as most common non-venomous snake in Tx. I actuall went to the snake id site to find two snakes I incountered many times as a kid in the 50s. One was 18" to 30", shiny blue colored and moved more rapidly than others. My granddad called them Blue Racers. The other was about the same size,dusty dark,reared the front part of his body well above ground,hissed and spread his body just below the head resembling a Cobra. One of the few snakes I've seen that stood and faught rather than flee. I gave them plenty of practice fighting but never killed them unless dogs joined the fight. Granddad called those Spreaden Outers. Have not seen either in last 50 years. I didn't find anything on the web site that sounded like either. Anyone know about this pair?