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2007-07-09 12:14:47 · 2 answers · asked by Anonymous in Science & Mathematics Biology

2 answers

Bull frogs contain tympanic membranes. They are used for hearing and ar located on the sides of the head behind the eyes. If they are larger than the eye the frog is a male. Smaller it is a female.

2007-07-09 12:33:51 · answer #1 · answered by ATP-Man 7 · 1 0

The bullfrog has a tympanum for hearing. This site describes the differences in size mentioned by ATP Man, and it has links to pictures in which you can see the tympanum clearly.
http://animaldiversity.ummz.umich.edu/site/accounts/information/Rana_catesbeiana.html

2007-07-09 21:22:56 · answer #2 · answered by ecolink 7 · 0 0

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