The cow's shocked response amused the serpent.  The water wasn't her element and she splashed frantically.  This only managed to further entangle her in the giant snake's coils which were just under the water.  As she touched portions of his length he could coil around her, and in a matter of about a minute she was totally immobilized.  She was strong, but he was stronger.<br/><br/>“Relax...my dear.  I wouldn't want anything bad to happen to you.  Water is a dangerous place for your kind.  As if to demonstrate he pushed her head under the water and held her there.  He could feel her trying to struggle, but he held her motionless.  Bubbles came up from the water as she exhaled.  After about 30 seconds of immersion he pulled her back up.  “See why it's a good idea if you cooperate?”