All cats make sounds—from meows and purrs to growls and hisses—but some felines are more vocal than others. Domestic cats make more sounds than other carnivores. Cats emit sounds as a form of greeting and to seek attention. They also vocalize to express happiness, appreciation, fear, pain, and aggression. Kittens are typically more communicative than older cats, and domestic felines are usually more vocal than feral ones.