Police responding to a noise complaint in Baraboo, Wis., found that the loud noises were actually the loud sounds of frogs fornicating.
It was the second time this month that a neighbor called police to complain about "loud music" coming from Debbie and Jeff Alsip's backyard, Baraboo's News Republic reported.
"Every spring, this happens," Debbi Alsip told the News Republic. "It has woke us up before, if we have our windows open."
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Officer Mike Pichler told the News Republic that when he arrived he found about a dozen frogs in the Alsip's backyard koi pond mating and emitting their loud, shrill mating calls.
The paper reported the Alsips have had the pond since 1994 and that each spring female frogs lay their eggs in the area outside Madison and look for Mr. Right.