Diabetic cat was howling all morning. I thought he wanted fresh ice water (he likes it cold) so I changed that out and added extra ice cubes, still howling. H cleaned out the litter boxes since I'm working, still howling. I did notice when I got the ice out, he tried to get inside the freezer so I thought well is he hungry and not wanting his cat food?! So I gave him some shredded chicken and he chowed that down and has not made a peep since. I guess he was hungry and didn't want his cat food... I wish I understood cat-speak.