Meet the World’s Grumpiest Frog

This frog with a perpetual frown isn’t actually grumpy — that’s just how the Black Rain Frog looks! This grouchy-faced amphibian has the most intimidating mug around. The proof is in the grumping. Scroll through for more grump.  Grump. (Photo: Miguel Vences and Frank Glaw)  More grump. (Photo: African Amphibians)  Even more grump.   (KJ Theron […]

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