FISH, AMPHIBIANS and REPTILES

The first steps up the vertebrate ladder!
Aquatic vertebrates (fish) and the first to
transition from water to land (amphibians
and reptiles), able to free themselves from
water by developing amniotic eggs.

SNAKES OF THE UNITED STATES
A representative sampling of numerous common and some uncommon, harmless and dangerous native snakes. 2 programs. 40 slides and detailed texts.
EP #430X SLIDES
$72.50

U.S. SNAKE COLLECTION Order #430X..........$72.50

Behavior, ecology, hatching and care of common U.S. snakes, all photographed
live in their natural habitat: pygmy rattler; eastern massassauga; timber rattler; eastern
and western diamondbacks; eastern and scarlet kingsnakes; worm snake; de Kay's
snake; red-bellied, garter, green, ring necked, hog nose and fox snakes, hatching
kingsnakes, pine and Florida pine snakes; eastern and Louisiana milk snakes; coral
snake; transpecos and northern copperheads; cottonmouth; brown, banded, red-bellied
and northern water snakes; queen, corn, black and yellow rat snakes; coachwhip; black
racer; snakes shedding. (2 slide sets) 4O slides and 2 guides.

CONTENT SAMPLE: 683 The most common and widespread rattlesnake of the
western states is the western diamondback (Crotalus atrox). It grows to a length of nearly eight
feet, but is much more lightly built than its eastern relative. Western diamondback rattlers are
responsible for more serious snakebites than any other snake in the U.S. They tend to have
nastier tempers than other rattlesnakes, have a potent venom, and are extremely numerous in
some desert regions.

The western diamondback is one of the “coontail” rattlesnakes, for the bold black-
and-white markings near the tail call attention to the snake and may serve to warn other
creatures to keep their distance. The rattle itself, which is merely a modification of the skin of the
tail, probably evolved as a warning mechanism. Many kinds of snakes vibrate their tails when
disturbed, but only in the rattlesnakes has the tail become greatly modified into a “noisemaker.”
Strangely enough, a rattler is deaf to the sound of its own, and any other, rattle.
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~0202-19~ Western diamondback rattler (Crotalus atrox). photo by John R. MacGregor.

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