Stridulation principle
Lessons from Lowland Streaked Tenrec
Buzz the warning.
Spine-Sound Family Warning

Core lesson
Small defenders can protect more by making the warning travel.
Biological basis
Lowland Streaked Tenrecs have spines and can communicate by rubbing specialized quills together, producing sounds used in social signaling.
Best use cases
Where this lesson tends to be most useful in practice.
WarningFamily defenseSmall powerCommunicationSignal systems