Thank you very much everyone. We are home (actually I am at work now). The vet tested for everything, liver, lung, thyroid, glucose, heartworm, Lyme, Rocky Mountain Fever, and one other tick borne illness that I am not familiar with, and moved pulled and palpatated every part of his little body. It was all negative. Which means it is most likely his heart, and he may have moved into congestive heart failure. I have made an appointment with a cardiologist for 2:00 on Monday, if I cannot get him to start eating or drinking before that I can take him to the emergency room at the cardiology hospital. I did insist on them giving him sub-q's this morning, hoping that it would perk him up. It hadn't as of 12:30 this afternoon. So we will see. Once I get him to the cardiologist I am hoping there is some medication they can put him on to help him.

Anyway, thank you again. I will keep you informed.