Angry chameleon

I was working yesterday afternoon when I noticed something fall out the tree outside my window.  When I went outside to explore I found two chameleons (I presume male) in the middle of a fight.  One had the others front leg while this one had the smaller one by the throat.  I picked them up, separated them and put them back on the tree.  This dude was clearly still angry as he literally stomped off up the tree - red sides and all!