Leaf-green tree frog (Litoria phyllochroa). Photo © Froggydarb · Wikimedia Commons · CC BY-SA 3.0
Growling grass frog (Litoria raniformis). Photo © Tnarg 12345 · Wikimedia Commons · CC BY-SA 3.0
Australasian marsupials have radiated into surprisingly diverse forms despite all retaining a single mode of reproduction by means of foetal birth.
This pattern is paralleled by the coexisting ‘treefrogs’ which likewise have diversified (see the remarkable range of body shapes in these photographs) more than any other genus of amphibians on Earth while remaining surprisingly conservative in their larval stage.
Eastern snapping frog (Cyclorana novaehollandiae). Photo © Jean-Marc Hero · Wikimedia Commons · CC BY-SA 2.5
Robin and the Honey Badger, 22 March 2016