Originally Posted by beachin
Also, he only goes outside into my fenced in, brick wall yard. There are no mice, nothing toxic. He isn't throwing up a lot. He did this morning and I think last night. Like I said he's drinking a ton of water. I will try and get him in Monday. Maybe I can have them do the stool sample and urine test, take his blood and be ready to run that if nothing is showing from the stool and urinalysis test...
This link give some reasons why a cat will drink a lot of water and lose weight , I hope you cat has something that is treatable.