Blue Bull Frogs
Name: Michael M.
I know you're going to think I'm nuts but I have
caught a bull frog that is a very bright blue when he sits above the water
line for any length of time.When he stays under water his color changes
to a very deep blue that virtually looks black.I have never seen this
before and have been walking ponds for as long as I can remember. Any
information would be helpful.
Blue bullfrogs are a rare finding, but have been reported. These
animals lack the ability to produce the normal yellow pigment in their
Laura Hungerford, DVM, MPH, PhD
University of Maryland
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Update: June 2012