Spittlebugs feed on plant sap and then excrete bubbly foam to create a protective fortress around themselves. Later, they emerge as adult froghoppers.
Spittlebug Superpowers Missouri Department of Conservation
A Millipede's Poisonous Glow - The New York Times
Spit Bugs and Soapsuds: The Safety Of Tiny Bubbles
Spittlebug Superpowers Missouri Department of Conservation
How the Spittlebug Builds Its Bubbly Fortress - The New York Times
How Spiders Use Silk to Fly - The New York Times
ScienceTake
Wolves Beat Dogs in Teamwork Test - The New York Times
ScienceTake Bees Catch Caffeine Buzz - The New York Times
Bug's 'spit' not for squeamish - The Columbian
How the Spittlebug Builds Its Bubbly Fortress - The New York Times
ScienceTake: War of the Ants - The New York Times
These Ancient Assassins Eat Their Own Kind - The New York Times
ScienceTake Snails Keep On Jumping - The New York Times