He took a video of the glassfrog's pumping heart and sent it to ... amphibians release their red blood cells back into circulation. Taboada says the frogs "pack roughly 90% of their red blood ...

As tiny glass frogs fall asleep for the day, they take almost 90 percent of their red blood cells out of circulation ... 6/23/17). “The heart stopped pumping red, which is the normal color ...

Water slowly flows back into the cells, blood starts flowing again, and the frog revives. In the lab, Storey said, ice thaws in about 20 minutes and the heart takes another 20 or 30 minutes to start.

The findings could help experts better understand blood flow in humans ... which means its heart and other inner organs can be seen. Did you know? Glass frogs live mainly in trees and spend ...

"If you turn these frogs over, you could watch their heart beating by itself ... it releases the red blood cells back into circulation and the liver shrinks back again. Mr Taboada explains ...

and when they wake up the blood flows back out into their whole body again. Study author Dr Sönke Johnsen from Duke University in the US explained: “Whenever glass frogs want to be transparent ...