A female bullfrog may lay 10,000 eggs that hatch into these, which may take 2 years to grow into bullfrogs
[DOC] [TLE] AMPHIBIANS OF OHIO fieldguide - Wildlife Home [PAR] inconspicuous most of the year, during the breeding ... 37 American Bullfrog ... 
Frogs and toads make themselves .... submerged stick or plant.