We tried carrot baby food first. It was a no go -- except for Willow who will eat anything.
I tried again today but he turned his nose up. I mixed a minute amount of the baby food with his favorite tuna food and he ate it.

So, I'm not sure if the pet communicator was trying to say he was craving it or if his body needed it. He doesn't seem interested in it, but we did get some into him.

Reading with the pet communicator tomorrow. Will post an update.