When tiny glass frogs fall asleep, they store almost 90 percent of their red blood cells in their liver, increasing the animals’ transparency (seen in the first clip), which may help hide them ...

A species of glass frogs found in South and Central America has the rare ability to turn its transparent appearance on and off. Skip to content. NOWCAST WPBF 25 News at 6 p.m.

A transparent 'glass frog' is transparent by hiding about 90% of red blood cells in the liver. There are many ways that creatures can camouflage themselves from predators.

These little tropical frogs have a rare talent: They "hide" nearly 90% of their red blood cells in their livers while sleeping.

But when northern glass frogs wake up and hop around in search of insects and mates, they take on an opaque reddish-brown color."When they're transparent, it's for their safety," said Junjie Yao ...

A species of glass frogs found in South and Central America has the rare ability to turn its transparent appearance on and off. Skip to content. NOWCAST Pittsburgh's Action News 4 at 6am.

What's behind the glass frog's amazing invisibility cloak Column. Nathaniel Herzberg. To hide from predators, this nocturnal amphibian stores 90% of its red blood cells in its liver during the day.

A species of glass frogs found in South and Central America has the rare ability to turn its transparent appearance on and off. Skip to content. NOWCAST Action 7 News More in the Morning.

These little tropical frogs have a rare talent: They "hide" nearly 90% of their red blood cells in their livers while sleeping.