I know this was posted quite some time ago, but I had this same thing happen to me today. I own 5 Pacific tree frogs, and they are usually always active and croak. I generally feed them every three days, and they all eat about 3-4 pinhead crickets. Yesterday when I went to feed them, my oldest frog was acting funny, ate one cricket (she usually eats the most) and then put her head in an awkward position, and wouldn't move. Today I went to check on them, and mist the tank when I found her completely dried up, and it seemed she had died weeks ago. I know for a fact that after she died she was not eaten by crickets because I have a separate feeding tank. I'm very worried and concerned for my frogs, they are as important to me as my dogs, I just want to make sure they are okay, and what ever happened to my eldest frog, won't happen to the other four.