Male green treefrogs attract mates with loud calls, but new research shows parasites can subtly change those signals.

Scientists suggest female frogs listen for changes in the male calls as a signal for when it's warm enough to mate.

I’ve said it before, and I’ll say it again: Summer is my favorite season, and the past few weekends have included seeing and hearing various frogs and toads. Earlier this month I had the opportunity ...

Duration: 45:29 minutes. Text and color photography of each species in booklet. Presents sounds of 130 species. siris_sil_713687 ...