Cats eating crabs may cause the crabs to block their gastrointestinal tract. Especially kittens with weak constitutions will have problems about an hour after eating crabs. Therefore, it is not recommended that owners feed crabs to kittens. This is mainly related to the structure of crabs, which can easily cause indigestion and even intestinal obstruction in kittens. If you find that your cat has eaten crabs, seek medical attention immediately.

In addition to crabs, cats cannot eat other foods:

1. Onions and garlic. Onions, garlic, shallots and green onions can destroy your cat's red blood cells, causing anemia. Cats will definitely be poisoned if they eat a large amount of these foods, but they will also be poisoned if they eat onion soup or garlic powder and other foods made from concentrated onions or garlic.

2. Milk. Cats are unable to digest the lactose in milk, which may cause stomach upset or diarrhea.

3. Raw eggs, raw meat and bones. Just like humans, cats can become infected with salmonella or E. coli if they eat raw eggs or meat. Symptoms vary and may include vomiting, diarrhea and lethargy.