== Constriction not suffocation. == 

 The page currently mentions boa constrictors suffocate their prey by squeezing the lungs, however recent research argues that it's actually cardiac arrest because they constrict the blood flow to the heart.  I heard about it in a BBC radio podcast today, then came here to read more about it except this page mentions suffocation, so I then found these articles: 

 http://www.eurekalert.org/pub_releases/2015-07/tcob-csk071615.php 

 Cited in Popular Science as well 
 http://www.popsci.com/finding-out-how-boa-constrictors-kill-its-not-how-you-think