three frogs left

i buried leopardy this afternoon. he looked pretty much dead for several days, but every time i went to scoop him up, he'd start kicking around a little bit. he was skinny and his body looked old and worn out. i think he died of old age. maybe hastened a bit from being the smallest and the most timid. it didn't matter how much food i put in the tank, the fat ones would gobble it all up, and he never did seem to get quite enough. well, the other three seem to be completely back to normal. we'll see. i'm not sure how long these frogs are supposed to live, but according to something i read online, it said they live a lot longer than the five(?) years we've had them.