Page 97 - Atlas Of The World's Strangest Animals
P. 97
AMERICAN BULLFROG 97
A B
C
Heart
Frog and human hearts have
two atria (A and B). However,
frogs have just one ventricle
(C) while humans have two.
Feet
Five digits on each of the
bullfrogs’ hind feet are joined
by webbing,which helps to
power them through water.
Ears
These distinctive circles behind
the eyes are the frogs’ eardrums.
In males, the tympanum is larger
than in females.
(c) 2011 Marshall Cavendish. All Rights Reserved.
