US scientists have discovered a new frog species that makes some un-froglike sounds.
The Atlantic Coast leopard frog found in southern New Jersey groans and makes coughing noises rather than croaking sounds.
The unfamiliar call attracted the notice of wildlife experts several years ago in Great Swamp National Wildlife Refuge in Morris County.
They photographed the frog and concluded it wasn't the northern leopard frog or southern leopard frog.
The Courier-Post of Cherry Hill reports a Rutgers University-led team recently identified the species in an online scientific journal.
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Experts say it shows that the state's marshes and swamps are valuable to wildlife, even in urban or suburban areas.
