Sometimes a squeak can be heard coming from the leo's tank. I don't know how to properly describe it. There's nothing in or around the tank that would cause the noise.
Mine squeak all the time, and as for the yawn i was lucky a got this! it caught me off guard too and i have photo shopped this to look like he's doing a flame-thrower aswell haha
yes i know what you mean. i have seen then do it after eating which is clearly a realignment thing i guess or they are trying to push the food down. but iv seen mine do before for no reason almost a bored yawn