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.
Even though these substances-or allergens-are usually common in most environments and harmless to most animals, a cat with allergies will have an extreme reaction to them. As her body tries to rid itself of these substances, she may show a variety of symptoms. What Are the General Symptoms of Allergies in Cats? Sneezing, coughing (if the cat has asthma), wheezing; Itchy skin/increased scratching; Itchy, runny eyes; Itchy back or base of tail (most commonly seen in flea allergies) Itchy ears and ear infections; Vomiting; Diarrhea