.../ Summary: Through unknown mechanisms, Harlequin frogs have sensitive high-frequency hearing without the aid of a tympanic middle ear, which most tetrapods use to sense high-frequency airborne sound. Extratympanic hearing Auditory brainstem recordings Bufonidae Lung hearing Most tetrapods...

... months after metamorphosis, potentially limiting the sensitivity of post-metamorphic juveniles to sounds in their environment. We tested the hearing of five species of toads to determine how delayed ear development impairs airborne auditory sensitivity. We performed auditory brainstem recordings to test...