My american bullfrog

[Kurt]

Only the males call. Sounds like a bass violin.

[Iratus ranunculus]

Only the males call. Sounds like a bass violin.

Actually, the females will call, but only during a primarily male breeding chorus. Supposedly they do it to get more competition out of the males and make mate discrimination easier.

In any event, with bullfrogs, if the tympanum (ear drum) is MUCH bigger than the eye, it is male.

[osmbr]

his ear is bigger than his eye it looks like but i was wondering if he is too young to be calling for a mate. he isnt big at all about 3 inches s-v. and he calls its low and deep but he extends his neck out pretty fer when he does it ill put pic up tonight i couldnt find my camera last night i wanna know for sure if its a male. thanks

[osmbr]

hey i was also wondering which get bigger males or females

[blaurie]

the females get bigger.