I've been watching them since Sat. and AmberLee called me tonight so we were able to talk about it. This evening when I went by things were much better in the litter box department. In fact one of the cats stools seemed a little runny this time.

AmberLee said that Cassy tends to get stressed out easily when his meowmie isn't there. He was friendly to me on Sat. but then hid under the bed on Sun. and Mon. He later came out and let me pet him this evening. I also noticed that they've been drinking more water today so this is a great sign too. I'm going to keep AmberLee posted about everything so she doesn't have to worry too much about her furkids. I also have their vets number just in case there is a problem.

Thanks for all of the advice everyone.