Two tree frogs share an intimate moment. The eye-popping yellow of the male only emerges in mating season. Martin J. Whiting When seeking out potential mates, frogs, like humans, will often alter ...

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Holly has a degree in Medical Biochemistry from the University of Leicester. Her scientific interests include genomics, personalized medicine, and bioethics.View full profile Holly has a degree in ...

While poking around the garden the other day I found an adorable visitor. A small frog called a gray tree frog (Hyla versicolor) resting among the brightly colored flowers. This amazing little ...

Q. You once wrote that blue pigment is not known to exist in any terrestrial or freshwater animals with backbones. I found a blue bullfrog in a marsh in Virginia. It was mostly blue with some gray ...