I feel your pain! I have a normal male that typically takes a small f/t rat every week. Surprisingly enough he ate through the winter, then from May 11 until yesterday he didn't eat a thing. He's very private about eating, no "zombie rat dance" needed, just drop it into his tub and wait an hour or so to see if he decides he's hungry that day. I almost cried when I opened his tub later to check on him and the rat was gone.