Cats who throw up and are not eating may be suffering from kidney disease, according to the ASPCA. The ASPCA explains that cats with kidney problems are unable to effectively excrete waste products, leading to a dangerou... More »

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According to FelineCRF.org, vomiting white foam may indicate that a cat is suffering from an excess of stomach acid. The foamy vomit may be clear or white. Foamy vomit is sometimes an early indication that a cat is devel... More »

While cats often vomit for minor and benign reasons such as eating too quickly or playing too much after a meal, WebMD states that frequent and reoccurring vomiting can indicate colitis, intestinal obstructions, kidney f... More »

Cats cannot smile. They do experience emotions, including happiness. Cats have several physical ways of expressing pleasure, such as high-pitched meowing, a vertically position to the tail, narrowed pupils and a low, tri... More »

Cats purr as a form of communication to signal either contentment or anxiety. Purring is a vital part of a cat's interaction with other felines and begins in the second day of a cat's life. More »

www.reference.com Pets & Animals Pets Cats

Cats rub against people to communicate, leave their scent, show affection and claim their companions. Rubbing against legs is also a form of feline greeting. Additionally, by rubbing against a human's leg, the cat leaves... More »

Cats, like humans, can develop lactose intolerance as they age. Some cats can tolerate milk, and some can't. Giving cats a small amount of milk, then watching for signs of lactose intolerance for 24 hours, determines whe... More »

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