Cats respond to tongue clicking because the sound hits a sweet spot in their biology: it’s short, sharp, and high-pitched, mimicking the kinds of sounds their brains are wired to investigate. A tongue click shares acoustic qualities with prey rustling through leaves, insects chirping, or small rodents moving through underbrush. For an animal that can hear frequencies up to 85,000 Hz (nearly five times the human limit), these brief, crisp sounds are almost impossible to ignore.
What a Click Sounds Like to a Cat
Cats have one of the broadest hearing ranges of any domestic animal, picking up sounds from 48 Hz all the way to 85 kHz. Dogs top out around 44 kHz, and humans manage about 18 kHz. This extraordinary upper range evolved to detect the ultrasonic squeaks and rustling of small prey. A human tongue click produces a brief, broadband burst of sound, meaning it contains energy across many frequencies at once, including the higher ranges where cats are most sensitive.
What makes a click especially effective is its transient nature. It starts and stops abruptly, creating a sharp spike of sound against whatever background noise is present. A cat’s auditory system is specifically tuned to notice exactly this kind of signal. Neurons in the auditory cortex respond strongly to sudden, short sounds that stand out from continuous noise. A click cuts through ambient sound in a way that a drawn-out word or hum simply doesn’t.
The Prey Instinct Connection
Tongue clicks don’t just get a cat’s attention randomly. They tap into deep predatory wiring. The acoustic profile of a click overlaps with the sounds small animals make: a mouse skittering across a floor, a beetle clicking its wings, a bird hopping through dry leaves. These are precisely the sounds that trigger a cat’s hunting sequence of orient, stalk, and pounce.
Cats themselves produce something remarkably similar. When a cat spots a bird or insect it can’t reach, it often “chatters,” rapidly clashing its jaws together to create a stuttering, clicking sound. Researchers have noted that chattering may function as an attempt to mimic prey vocalizations. The sound is produced with a tensely open mouth and rapid jaw movement, and it’s triggered specifically when a cat’s attention locks onto potential prey. Some cats vocalize during chattering (producing what’s described as a “tweet” or “tweedle”), while others keep it voiceless. Either way, the connection between clicking sounds and predatory focus runs deep enough that cats both produce and respond to them instinctively.
How Cats Physically Track a Click
Watch a cat’s ears when you click your tongue and you’ll see something remarkable. Each ear rotates independently toward the sound source, sometimes before the cat even turns its head. A cat’s outer ear, the pinna, works like a satellite dish. Its shape amplifies or attenuates specific frequencies depending on the direction of the sound, creating a unique spectral fingerprint for every position in space. This lets cats pinpoint a sound source with impressive precision, even when it comes from directly ahead or behind where the difference between the two ears would otherwise be minimal.
The ear movement happens in two phases. First, a quick, short-latency flick toward the sound gives the cat an initial read on location. This fast sample can happen multiple times in rapid succession, helping the cat triangulate the source. Then, if the sound is interesting enough, a larger orientation movement swings the full acoustic axis of the ear toward the area, essentially turning up the volume on that spot in space while filtering out noise from other directions. A tongue click, because it’s brief and broadband, gives the ears a lot of spectral information to work with in a very short window.
Learned Associations and Training
Beyond instinct, many cats learn to associate tongue clicks with positive outcomes. If you’ve ever clicked your tongue before feeding your cat or giving it a treat, you’ve been doing a simplified version of clicker training. In formal clicker training, a small device produces a consistent click that acts as a “reward marker,” telling the cat the exact moment it did something right. The click bridges the gap between the behavior and the treat that follows.
Clicking sounds work better than verbal cues for a few reasons. The sound is novel, so it stands out from the constant stream of human speech a cat hears all day. It sounds the same every time, regardless of your mood, volume, or tone of voice. And the timing is precise: you can click at the exact instant a behavior occurs, which is harder to do with a word. Even without formal training, cats in homes where tongue clicking precedes food, play, or affection will quickly build the association. Over time, the click itself becomes a cue that something good is available.
Why Some Cats Respond More Than Others
Not every cat will come running when you click your tongue, and the variation comes down to a mix of personality, experience, and age. Cats with strong prey drives tend to be more reactive to any short, sharp sound. Cats that have been inadvertently “trained” through repeated positive associations respond more reliably. And socialization matters: a cat raised around humans who regularly used clicking sounds will treat them differently than a feral cat hearing one for the first time.
Age can also play a role in unexpected ways. In older cats, particularly those over 15, high-pitched sounds including clicks can sometimes trigger a condition called feline audiogenic reflex seizures, or FARS. A study published in the Journal of Feline Medicine and Surgery identified tongue clicking as one of the sounds capable of triggering seizures in affected cats, alongside crinkling tin foil, tapping glass, and clinking keys. All the triggering sounds shared a common feature: they were high-pitched. FARS is a specific epilepsy syndrome with a geriatric onset, not a normal response, but it illustrates just how powerfully a cat’s nervous system reacts to these types of sounds.
How Clicking Compares to “Pspsps”
Tongue clicking isn’t the only sound people use to get a cat’s attention. The classic “pspsps” works on a similar principle. That hissing, sibilant sound mimics prey rustling through dried leaves or a cricket chirping. Both sounds are high-frequency, short, and attention-grabbing. The key difference is texture: a click is a single sharp burst, while “pspsps” is a sustained, repeating friction sound. Clicks may be better at triggering an immediate orienting response because of their abrupt onset, while “pspsps” can sustain attention over a slightly longer period.
In practice, individual cats often prefer one over the other, and that preference is shaped mostly by which sound they’ve learned to associate with interaction. If you’ve always used tongue clicks to call your cat for dinner, “pspsps” from a stranger may get a curious ear flick but not much more. The underlying biology is the same for both sounds: they fall in the frequency range cats are built to notice, they’re distinct from normal background noise, and they carry just enough resemblance to prey sounds to activate that ancient, irresistible urge to investigate.