The Calyptocephallela gayi, or Helmeted Water Toad, is one of the largest frogs in the world, growing up to over 1 foot in length and weighing up to 2.2 pounds.

From underground burrowers to nearly invisible frogs, these species show how wonderfully odd and varied the world of ...

March 20 is World Frog Day, and we’ve put together ... It’s also known to kill other frogs. The largest frog in Hong Kong, the male giant spiny frog has short spines on its chest and fingers.