A lizard's penis evolves six times faster than any of its other parts.
Nature has perfectly outfitted Bornean gliding lizards with colors matching falling leaves in their different environments.
In honor of the all-consuming quest for good deals on the shopping spree known as Black Friday, we present animals for whom every Friday is that color.
Reptiles that have sex early and frequently in life and feast on meat tend to live fast, die young.
Green anole handles arrival of an invasive competitor by making better toes in a mere 20 generations.
Research team sequences all the genes expressed during regeneration.
A teeny-tiny skull from a bizarre 11-million-year-old worm lizard hints at the evolution of these strange creatures.
Researchers working in the Mekong region of Southeast Asia discovered 367 new species between 2012-2013, and are finding them at a rate of one new species every two days.
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