HERES a thing - the smallest frog in the world is the Paedophryne amauensis. it lives in papau new guinea, grows up to 7.7 mm long, and was discovered in 2009 when reasearchers, after tracing the frogs then unexplained insect-like call, scooped a bunch of wet leaves off the ground in a clear plastic bag and saw it hopping around inside

(photo from x)