The teensy frogs may have snagged the poison by eating toxic mites.
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10 most poisonous animals, from frogs to sharks. There may be some
Kingsnake.com - Herpforum > Amphibian Forums > Frogs
Look—Don't Touch! - NWF
Six Key Differences Between Frogs and Toads - RESTORASI EKOSISTEM
World's smallest frog packs poison punch
No, wait, THIS is the world's smallest frog
World's Smallest Frog Found—Fly-Size Beast Is Tiniest Vertebrate