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