I just about panicked this morning, when I went to turn on the light for Jackson's "daytime" simulation and raise his thermostat (I know the light isnt nescessary, but it makes us humans feel better) he was nowhere to be seen in his tank! My lid slides on and locks, so I was completely bewildered as to how he possibly could have escaped. I started to search the (secure) lid to find some fatal flaw when I found him- I wrapped half the lid in saran wrap to help with humidity, and there he was, between the saran and screen. I wish I could have seen him get up there 'cause I just can't quite figure how he did it...