Kittens will meow to their mothers, but as they mature, they typically quit using this sound to communicate with other cats. Often, adult domestic cats that meow do so only in the presence of humans. This is likely an extension of the way kittens use their plaintive meows as a signal. If you have cats, you probably know that not all meows are equal. You might even be able to determine if your cat is happy, angry or demanding food or attention just by listening to the type of meow.