Head of a sidewinder (Crotalus cerastes)

ALETHINOPHIDIA • AMERICAN • AMERICANS • ANATOMY: HEAD • ANIMAL • ANIMAL: SNAKE • ANIMALIA • C. CERASTES • CARNIVORE • CARNIVOROUS • CHORDATA • CHORDATE • CLOSE UP • CLOSE-UP • CLOSEUP • COLUBROIDEA • CROTALINAE • CROTALUS CERASTES • DESERT-DWELLING • DETAIL • FAUNA • FOREGROUND • HEAD (ANATOMY) • HEAD (BODY) • HEAD • HERPETOLOGY • HORIZONTAL • HORN • ILLUSTRATION • LEPIDOSAURIAN • LIFE • NATURAL • NATURE • NORDEN • NORTH • ORGANISM • PIT • RATTLESNAKE • RATTLESNAKES • REPTIL • REPTILE • REPTILE: SNAKE • REPTILES • REPTILIAN • SCALE • SCALY • SERPENT: RATTLESNAKE • SERPENTES • SIDEWINDER • SNAKE SNAKE • SNAKE • SNAKE: RATTLESNAKE • SNAKES • SQUAMATA • SQUAMATE • VENOMOUS • VERTEBRATA • VERTEBRATE • VIPERIDAE • WILDERNESS • WILDLIFE • ZOOLOGY