Question

How can you tell if a frog is a boy or girl?

Answer 1

if the frogs will do sound at night,we can easily say that the frog is male. and when the male frogs are doing sounds,the female frogs will be silent.the male frogs do sound to attract female.
by these we can easily say that the frog is boy or girl.
=>the female frogs are inch larger than the male frogs.
=>the male frogs have vocal sacks.

by all these we can say that the frog is boy or girl.
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Answer 2

with the help of tymnpanum