Visual system
Different species are able to see different parts of the light spectrum; for example, bees can see into the ultraviolet, while pit vipers can accurately target prey with their infrared imaging sensors.<ref>	     AB Safer and MS Grace (2004),   "Infrared imaging in vipers: differential responses of crotaline and viperine snakes to paired thermal targets". Behav Brain Res. 154(1):55-61. 2004 Sep 23. </ref>