National Geographic : 1957 May
© National Geographic Society + Young Rattler Gives Silent Warning Having only a button, this western diamond back vibrates his tail but cannot make the buzz of an adult. He carries fangs and venom from birth; these he uses for killing his prey. Pits in the side of his head serve as a sort of thermometer by which he detects warm-blooded creatures even in the dark. Kodacbromes by E. P . IIaddon + Ornate Box Turtles Meet in a Meadow Turtles have outlived the dinosaur and many other reptiles now found only as fossils. Their armor has remained essentially unchanged for 175 million years. During cold weather these turtles burrow in the ground. Males in the mating season joust like knights in slow mo tion, nipping necks and trying to overturn each other.