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A Brazilian flea toad’s head is too tiny to bear its many crowns.
Scientists have bestowed the frog — which is native to Brazil but is neither a flea nor a toad — with two titles: The world’s smallest known amphibian and smallest known vertebrate. From snout to rump, one Brachycephalus pulex measures just under 6.5 millimeters, herpetologist Mirco Solé and colleagues report February 7 in Zoologica Scripta. That’s roughly half a millimeter shorter than the previous record holder and small enough to sit comfortably on a pinkie fingernail.
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