My two male Red Eyes were calling constantly last night in competition...seeing who could be the loudest. Then as they were sitting about six inches from each other they started shaking their butts. I've never seen this in person before so it was very exciting to watch. They never did any physical fighting or anything but they were obviously challenging each other to see who would be top frog. They did this all night long even until the early morning. I will try and get a video of them tonight with a night camera. Waldo was my dominant male for the last few years. A couple of months ago I got Roger an adult male from a friend. He's been in quarantine and has been calling back and forth with Waldo for the last two months. Two weeks ago I put Roger in the big tank and he was pretty quiet. But last night he started up and Waldo started shaking at him. He shook back and they did that most of the night. It was very funny to watch. Macaroni, my other male, stayed out of it as usual. Waldo's never had any real competition for the girls so this breeding season should be really interesting.