My fat cat is not fat any more, so we took him to the vet. The vet ran blood tests, which came back fine, and saw a healed broken tooth that he said was likely the cause of the weight loss because it was probably painful to eat. He's lost even more weight since, by quite a bit, so he went back today for more blood tests and an x-ray, and the vet said he thinks he sees something in his stomach. He wants to do an ultrasound tomorrow to find out what it is, but says probably stomach cancer.
My poor squishy purring plushy cat.