LYNN M. STONE / Bullfrog (Rana catesbeiana) with head sticking out above water in pond, Deep River, Connecticut, USA, July
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Rolf Nussbaumer / RF- Bullfrog (Rana catesbeiana) adult on American lotus lilypad. Welder Wildlife Refuge, Sinton, Texas, USA. (This image may be licensed either as rights managed or royalty free.)
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Rolf Nussbaumer / Close-up of a Bullfrog eye {Rana catesbeiana} with head camouflaged in duckweed, Welder Wildlife Refuge, Sinton, Texas, USA.
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Doug Wechsler / Bullfrog male in garden pond {Rana catesbeiana} Pennsylvania, USA.
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Doug Wechsler / Bullfrog female by garden pond {Rana catesbeiana} Pennsylvania, USA
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LYNN M. STONE / Bullfrog (Rana catesbeiana) on edge of pond, Connecticut, USA
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LYNN M. STONE / Bullfrog (Rana catesbeiana) on edge of pond, Connecticut, USA
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Rolf Nussbaumer / RF- Head portrait of Bullfrog (Rana catesbeiana) partially submerged in lake, Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA. (This image may be licensed either as rights managed or royalty...
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Doug Wechsler / Bullfrog (Rana catesbeiana) male, in man-made pond, Farimount Park, Wissahickon Creek, Philadelphia, Pennsylvania, USA
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Doug Wechsler / Bullfrog (Rana catesbeiana) male, in man-made pond, Farimount Park, Wissahickon Creek, Philadelphia, Pennsylvania, USA
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Gerrit Vyn / Bullfrog (Rana catesbeiana) partially submerged in a pond. August. Tompkins County, New York
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Nature Production / Bullfrog {Rana catesbeiana} tadpole (110mm in length) sequence 6/8
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Nature Production / Bullfrog {Rana catesbeiana} tadpole (52mm in length) sequence 5/8
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Nature Production / Bullfrog {Rana catesbeiana} tadpole (34mm in length) sequence 4/8
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Nature Production / Bullfrog {Rana catesbeiana} tadpole (23mm in length) sequence 3/8
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Nature Production / Bullfrog {Rana catesbeiana} tadpole (8mm in length) sequence 2/8
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Nature Production / Bullfrog {Rana catesbeiana} tadpole (8mm in length) sequence 1/8
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Nature Production / Bullfrog {Rana catesbeiana} tadpole (80mm in length) sequence 8/8
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Nature Production / Bullfrog {Rana catesbeiana} sheet of eggs on water
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Nature Production / Bullfrog {Rana catesbeiana} tadpole (91mm in length, with hind legs developing) sequence 7/8
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Doug Wechsler / Bullfrog female {Rana catesbeiana} Lafayette Hill, Pennsylvania, USA