Venomous Snakes

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<li>The head is triangular (nonvenomous snakes have a usually oval head)</li>
<li>From the vent (rectum) to the end of the tail, on the underside of the snake, the scales are not divided (nonvenomous - the scales in the same area are divided)</li>
<li>Except for the copperhead, there is a rattle at the end of the tail. (Nonvenomous snakes may vibrate their tail when threatened, but do not have a rattle).</li></ol> For many of these points, the rule of thumb is -- , if you're unsure of the species and you're close enough to see some of these characteristics, YOU'RE TOO CLOSE!<br />
<h2>How Do They Do That?</h2>