Cats, whether big or small, rely on vocalizations to communicate, and none is more important than the classic meow. It's how a kitten talks to her mom, how she greets her human parents, and how she asks for dinner. So if vocalizing is such an important form of cat communication, then why does she sometimes meow without sound? Is there such a thing as a silent meow?

The Cat's Meow

To put a cat's meow into perspective, there are at least five different types of meows, and the tone and pitch of each meow signals a different emotion, need or want. Your kitty knows exactly which meow or chirp will get her a snuggle or a midnight snack. After living with pet parents for thousands of years, cats have picked up a few pointers on how to get what they want.

According to Nicholas Nicastro, who participated in a cat vocalization research study at Cornell University, cats don't really use "true language," and don't understand what their own meows mean. But, he says, "Humans (or at least well-trained cat people) can assign meaning to sounds with various acoustical qualities because, through long association with cats, we have learned how they sound in different behavioral contexts." A cat's consistent use of specific vocalizations to communicate with her humans illustrates how well cats have adapted to domesticated life and how much humans have learned from their feline friends.

The Silent Meow

Why does my cat meow without sound? It's an intriguing question. While researchers know so much about various cat vocalizations and what they mean, the silent meow, when she opens her mouth but no sound comes out, is an outlier of sorts. What's happening during this non-meow?

According to the Smart Living Network, "The occasional 'silent meow' is common among felines and nothing to worry about and some cats do use this more often than others." For many cats, the quiet meow simply is a substitute for a classic meow.

But is the meow really silent? As it turns out, it may be that your cat actually isn't meowing without sound; rather, it's just too quiet for you to hear. "A cat up to three feet away from the origin of a sound can pinpoint its location to within a few inches in a mere six one-hundredths of a second," explains Animal Planet. "Cats also can hear sounds at great distances — four or five times farther away than humans." With such an astounding sense of hearing, a cat instinctively will incorporate those extra sounds into her own communicative signals.

Therefore, if a cat can hear a high-pitched meow well above what a human is capable of hearing, then it's worth the cat's time to make that sound. So, it's possible that she is actually meowing, but she doesn't know that you can't hear it as well as she does.