With a shellfish allergy, lobster, crab, oysters, clams, scallops, abalone, shrimp, sea urchin, crayfish and mussels all are problematic. With a fish allergy, regular fish, as well as foods containing fish such as Worcestershire sauce, Caesar salad and imitation seafood, are off limits.
Symptoms of IBD. One or many of the following symptoms can be found in a cat with inflammatory bowel disease (IBD): 1  Vomiting. 2  Diarrhea. 3  Weight loss. 4  Normal/increased appetite. 5  Stomach rumbling. 6  Belching. 7  Black, tarry stools. 8  Flatulence (from digested blood). 9  Halitosis.
Other conditions that can mimic the symptoms of feline colon cancer include gastric blockage, viral, bacterial and fungal infection, colitis and parasitic infestation. The symptoms of colon cancer in cats include difficulty defecating and straining to defecate. However, cats suffering from colon cancer will defecate more often than usually. There may be mucous or brightly colored, red blood in your cat's feces. Your cat may lose weight and seem to be lethargic and depressed.