http://bit.ly/2AbEv8g How the Spittlebug Builds Its Bubbly Fortress Insects, Oxygen, Reproduction (Biological), Animal Behavior, your-feed-science Spittlebugs feed on plant sap and then excrete bubbly foam to create a protective fortress around themselves. Later, they emerge as adult froghoppers. JAMES GORMAN and CHRISTOPHER WHITWORTH http://bit.ly/2V0PrNW February 19, 2019 at 05:30AM