Aside from its ability to estivate, the lungfish is unique in that it is only one of a few fish species that possesses both lungs and gills, allowing it to breathe above and below water. This ancient ...

As if the Australian snake-necked turtle didn’t have enough going for it, with that magnificent neck, its preference for slow-moving water, and its long life span. These magnificent beasts, ...

This engaging nonfiction picture book instructs young readers on the opposite of wintry hibernation: summery estivation, a more recently discovered seasonal sleep cycle engaged in by certain animal ...