As many of you know, I have had Yoki the Pacific Chorus frog for over a year and I love listening to him call. Recently, I added two Green Treefrogs to the mix, and discovered that the one, Elton, is indeed a boy. Though both males tend to grumble to each other softly, I have noticed over the last 2 weeks that if one starts doing a full mating call, the other male will respond. Has anyone else had this happen between two species? Elton, who has never called during the day, started going full tilt when he heard Yoki at 3 in the afternoon....what got Yoki going, I have no idea!