I thought just what you did , until the 4th day . I have hatched quite a few different species of reptile , including other chameleons . I have seen an animal stay in the egg for a couple of days , but I had never seen this . this lizard climbed all around the terrarium , I saw it zap a fruit fly and drink water . what I did was I sprayed the egg shell with water a few times in the past 6 hours , then about 2 hours ago I took out the lizard , on a small branch and held the now softened shell with my fingers and prodded the little guy until he got annoyed and pulled himself free . apparently his hind legs were stuck , something I could not see clearly until I put him under the magnifying glass . well live and learn