Sadie and Zack - they were behind the baby gate when I went in this morning and they were both "talking" to me as I came in.  They were ready to go outside so I let them back out right away and they both peed.  I fed them.  Sadie ate but Zack didn't.  I did give them a few treats and of course Zack gladly ate those.  Have you tried switching his food?  Maybe he's decided he doesn't like it anymore.  Yvonne left a note that he did gobble it down last night but I don't think he'd eaten all day so he probably was hungry.  We stayed in the yard and Sadie got to say hello to your neighbor and their little white dog.  I checked the downstairs and there weren't any accidents.  I fed the hermit crab and re-wet his sponges.  I could hear him moving around on the rocks as I was getting ready to leave.