<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Infrared_sensing_in_snakes" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Infrared_sensing_in_snakes</a><p>They can sense radiation between 5 micrometers and 30 micrometers.