Seven new species of miniature frogs, each fitting onto the tip of a thumb, have come out of hiding in the Brazilian Atlantic Rainforest, scientists report in the journal PeerJ. The teeny-tiny frogs live on isolated mountaintops in cloud forests. Here's a look at the colorful cuties. [Read full story on the tiny frogs from Brazil]

Blue baby

Brachycephalus mariaeterezae. The intensity of the light of the flash during photography led the light-blue coloration along their vertebral column to become less apparent.

Dark stripe

Warty!

This frog has warts: Brachycephalus verrucosus has orange-hued skin covered with brownish-green bumps. An adult female of the species was collected on Jan. 25, 2011, at Morro da Tromba, municipality of Joinville, in the state of Santa Catarina, southern Brazil.

Frog spots

Piggybacking

Hiding out

Olive skin

Sky island

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