Scientists in Australia have discovered a tree frog with bright blue skin instead of the usual green color, new pictures show. The blue pigmentation is due to a rare genetic mutation, experts say.

PROVIDENCE, R.I. [Brown University] — One day, amid his decades-long study of how animals move, including how frogs jump, Brown University biologist Thomas Roberts found himself and colleague Richard ...

Scientists have now discovered the oldest ancestor for all the Australian tree frogs, with distant links to the tree frogs of South America. Newly discovered evidence of Australia's earliest species ...