Portal:Frogs/DYK/2

... that the call of the male river frog (pictured) can be described as a "deep, low-pitched, rolling snore"?
... that breeding in the southern toad (pictured) can be triggered by heavy rain?
... that the humming frog aestivates in an underground burrow during the hottest part of the summer?
... that the bird-voiced treefrog and the pine woods treefrog can be recognised by their distinctive calls?
... that the Pyrenean frog breeds in mountain streams after the snow has melted?