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^Tn^Z^Ei*] - Pennsylvania Fish and Boat Commission

^Tn^Z^Ei*] - Pennsylvania Fish and Boat Commission

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PENNSYLVANIA REPTILES ^AMPHIBIANS<br />

(Edited <strong>and</strong> approved by M. Graham Netting, Curator of Herpetology, Carnegie Museum)<br />

AMERICAN TOAD (Bufo terrestris americanus) . . . Maximum length<br />

4)4 Inches; this is the familiar toad of our gardens; has black-spotted<br />

belly; each dorsal spot contains but one or two warts; large spiny<br />

warts appear upon upper surface of hind legs; trilling of males on<br />

warm spring nights is melodious; females lay 4,000 or more eggs In<br />

ponds <strong>and</strong> flooded depressions; economically valuable for its diet of<br />

harmful insects; generally distributed throughout the state.<br />

SINGING AMERICAN TOAD ... An inflated sac on the toad's throat<br />

serves as a sounding board to intensify the volume of the song; this is<br />

a single sac with air entering it from the mouth through two slits;<br />

only the males sing, the purpose of the song being to attract the females<br />

during the mating season; toads can sing under water by keeping<br />

both mouth <strong>and</strong> nostrils closed, the air passing back <strong>and</strong> forth<br />

from throat sac to lungs over the vocal cords in the throat.<br />

TOAD TADPOLE . . . Toad eggs natcn in irom tnree to twelve aays,<br />

depending upon the temperature; tadpoles of the American <strong>and</strong><br />

Fowler's toads are indistinguishable in the field; tadpoles emerge in a<br />

very rudimentary condition, possessing neither eyes nor mouth; they<br />

develop temporary external gills <strong>and</strong> a small V-shaped adhesive organ<br />

on the throat for clinging to vegetation; in a few days they become<br />

typical pollywogs with oval bodies propelled by wriggling tails.<br />

No. 6 Toads<br />

FOWLER'S TOAD (Bufo woodhousii fowleri) Maximum le lEei<br />

>,VA inches; distinuished from similar American Toad by its uninar 1<br />

;or lightly spotted belly, by the presence of more than two warts -f<br />

/each dorsal spot, <strong>and</strong> by the absence of large warts upon the JJPPj,<br />

",surfaces of the hind legs; song distinctly different from American "Ijffi<br />

likened to the bleating of a sheep or goat; breeds about one m°j ; tie*<br />

later than American Toad; found in 29 scattered <strong>Pennsylvania</strong> coun<br />

AMERICAN .i.'i urn v ;!.-. TOAD n/.Ji/ LAYING<br />

I..III.-,VT uw«o . . . n...u cssa lllrtj M*. - . JJ»<br />

guished from the eggs of <strong>Pennsylvania</strong> frogs because they are la 1 strings, never in clusters or singly; fertilization of the eggs, " JJJ as „

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