Why do cats knead? What “making biscuits” means and what the evidence shows

Kittens knead their mother’s belly to keep milk flowing, but no study has tested why adult cats keep doing it, so the leading ideas (a nursing habit, contentment, scent) rest on observation and expert opinion rather than experiments.

Cats knead, or “make biscuits”, most likely because it is a habit carried over from kittenhood. Newborn kittens push their mother’s stomach with alternating front paws while they feed, and International Cat Care says this keeps the milk flowing. Adult cats mostly do it when they are relaxed, often on something soft or on a person they feel safe with.

That nursing link is a hypothesis, not a proven cause. A University of Adelaide animal-behaviour academic calls it the most likely explanation, and a Cornell veterinary behaviour resident called it a remnant of kittenhood, but neither cites an experiment that tested it in adult cats. Scent marking and nest-making are weaker candidates still, and a normal amount of kneading is not a health problem.

Explain it like I’m busy:

• Kittens knead while nursing. Adults probably keep the habit because it is tied to comfort, and the trance-like look CatWatch describes fits that.
• Cats do have scent glands in their paw pads, so leaving scent is plausible. Nobody has measured whether kneading actually does it, and no study of the “nest-making” idea turned up.
• If claws hurt, put a thick blanket on your lap, keep nails trimmed and never punish the cat. Kneading that is frantic, constant, new or hurts the cat itself is worth a vet’s opinion.

Key facts about cat kneading

• The movement: rhythmic, alternating pushing of the front paws, named for the way people knead dough. Cats usually do it on soft surfaces, laps and blankets.
• Kittens: a newborn weighs around 100 g and, according to International Cat Care, triples that in three weeks while feeding for several hours a day, kneading as it goes.
• Glands: a 1989 tissue study of the cat footpad concluded its glands both improve grip and leave scent marks. It did not look at kneading.
• Adults: in a UK rescue-centre study of 100 cats, kneading lasted longer when visitors handled the cats the way the researchers recommended (Haywood et al., 2021).
• Not universal: Susan Hazel and Julia Henning of the University of Adelaide write that some cats never knead and that this is normal individual variation.

What cats are doing when they knead

A kneading cat presses one front paw into the surface, then the other, over and over. CatWatch, a newsletter produced with the Cornell Feline Health Center, says kneading is usually accompanied by purring or rubbing and gives the cat a trance-like look. Tracy Kroll, DVM, an animal behaviour resident at the Cornell University College of Veterinary Medicine, described that look as focused contentment and believes it is probably a sign of affection. Our explainer on why cats purr covers the sound side of the same relaxed state.

The claws are often out. That is why kneading can feel less like a massage and more like a series of small pinpricks, a problem we return to below.

Why do cats make biscuits? Four ideas, ranked by evidence

The graphic gives the short version. The fuller reasoning for each idea follows.

1. A leftover from nursing

This is the idea with the most support, in the sense that the behaviour really does appear in kittens. International Cat Care describes newborns that “keep the milk flowing by kneading their mother’s stomach with their paws”, and adds that it is the same behaviour cats may show on laps or fluffy blankets.

The step from kitten to adult is where the evidence thins. Live Science reports that, although the reason is uncertain, the most likely explanation is a leftover from kittenhood. Hazel told the writer that kneading is “very similar to that kittens use when suckling”. Laura Watson of International Cat Care told the same writer that adults may knead “particularly when in the presence of someone with whom they feel safe”, because they link the paw movement with the comfort of nursing. Hazel also points to cats that drool, or even suckle the surface they knead, as lending support.

Kroll told CatWatch she and her colleagues think kneading is a remnant behaviour from kittenhood, and the article adds that the reasons kittens do it are not fully known. Hazel and Henning add a mechanism, that suckling releases oxytocin and stimulates milk supply, and that kneading likely evolved for this reason. We could not trace that mechanism to a primary paper, so we treat it as the authors’ summary, not a measured result.

A 2024 review in Animals by McGrath and colleagues frames adult kneading as a “neotenised” signal: a juvenile trait kept into adulthood, along with meowing and purring, and used by adult cats to communicate with people. They note that such signals are unlikely to appear in adult wild cat species in captivity. That is a review’s reading of the pattern, not a test of kneading itself.

2. Contentment and affection

Here the evidence is observational but real. In a study at Battersea Dogs and Cats Home in the UK, Haywood and colleagues filmed 100 cats available for rehoming as they met 120 members of the public, giving 535 observations from sessions of up to five minutes (up to six per cat). After the visitors were trained to let the cat choose, watch its body language and touch mainly the temples, the cats treaded (kneaded) with their front paws for significantly longer, along with more tail waving and rubbing.

A separate review by Finka lists kneading among the affiliative behaviours that may rise when people touch a cat’s temple region, and a 2021 ethogram (a catalogue of behaviours) by Sandra Nicholson and Roslyn O’Carroll places kneading and treading among the signs of contentment. All of this shows that kneading travels with a good mood. It does not show that kneading causes one, or that a cat that never kneads is unhappy.

3. Leaving scent

The anatomy is established. In 1989 Meyer and Bartels, at the Hannover veterinary university in Germany, applied enzyme and carbohydrate histochemical methods (tissue staining) to the eccrine glands, a type of sweat gland, in the cat footpad. Their abstract concludes that these glands improve the paw’s grip and leave typical scent marks.

Whether kneading puts that scent on a blanket or a lap is a different question. Hazel’s comment to Live Science was hedged: “It’s possible kneading can be used to deposit scent.” She also separates kneading, seen in relaxed cats, from scratching a tree, which she thinks is more likely to deposit scent. PetMD goes further and says cats deposit scent to mark territory or claim a person or object. We found no measurement behind that, and the tissue study is about glands, not behaviour.

4. Making a nest

PetMD, in an article reviewed by a veterinarian, says wild felines knead grasses and bedding before resting and that pet cats may do the same. It is a tidy story. We found no study that watched wild or feral cats doing it, and the article cites none, so it remains a guess about ancestry.

CatWatch also floats a minor idea: because the motion resembles scratching, kneading may serve nail maintenance as well. Treat that as speculation too.

Show the numbers behind the study descriptions

• Kitten growth: International Cat Care gives a birth weight of around 100 g that triples in three weeks, so about 300 g by day 21 (100 g × 3).
• Haywood et al.: each cat could have up to six five-minute sessions, so at most 6 × 5 = 30 minutes of footage per cat. The authors report 535 observations across the 100 cats and 120 volunteers, which is fewer than the 600 sessions that six per cat would give.

How scientists know, and why this is still open

Three kinds of evidence sit behind the table: direct observation of kittens and adults, microscope work on tissue, and expert reasoning from both. What is missing is a test that separates the explanations. Nobody has, for example, compared adult kneading in cats with different early nursing experiences, or tried to detect paw scent on a surface after kneading.

That gap is SciQuest’s own observation, not a claim from the sources. Until such work exists, the honest summary is that kneading starts in kittens, travels with comfort in adults, and has a plausible but untested scent function.

What changes the answer

Cats differ. Some knead often, some rarely and some never, and Kroll told CatWatch that a cat that never kneads you is not necessarily withholding affection, because some cats are simply more tactile than others. Surface matters too, since cats generally knead soft things. Hazel and Henning say compulsive kneading and sucking is a particular problem in Siamese and Birman cats.

Change is the useful signal. Hazel and Henning point to kneading that is very frequent, prolonged, compulsive or damaging to the cat. PetMD points to kneading that is new, increased or excessive. Neither treats the ordinary habit as a problem.

Why does my cat knead me?

Kroll suggested a cat kneading its person may, in that moment, associate them with its birth mother. Hazel and Henning say the behaviour can signal that the cat feels affiliated with you, and Watson links it to feeling safe. Kroll adds that attention from the person may then reinforce the habit, which could explain why some cats do it more with some people.

It is a reasonable, friendly reading. It is also an interpretation, since cats cannot tell us what the paw movement means to them.

What to do when the claws hurt

• Add a layer. Watson of International Cat Care suggests a thick blanket or cushion on your lap for the cat to knead. Leaving it out when you are away gives the cat a familiar-smelling place to knead.
• Trim the nails. Watson also lists claw trimming. PetMD advises short nails and starting trims early, and warns against declawing, which it describes as painful.
• Reward gentle kneading. Hazel suggests giving food or a pat when the cat kneads without claws, or getting up and moving if claws come out. Hazel and Henning suggest a short cue such as “pads!” paired with a treat.
• Do not punish. Watson says punishment can damage the bond because the cat does not understand it is causing pain. Hazel and Henning also advise avoiding telling the cat off or kicking it off your lap.
• Protect fragile skin. CatWatch warns that scratching can be dangerous for people with more vulnerable skin, such as diabetics, older adults and infants.

Why it matters to you

Mostly this is reassurance. A cat kneading in your lap is doing a normal, widely seen behaviour that the sources link to comfort. The practical points are small: manage the claws, do not punish, and notice change. Hazel and Henning say kneading that is very frequent, prolonged, looks compulsive, or damages the cat’s paws, legs or mouth may point to stress or pain and warrants a vet visit. PetMD likewise suggests seeing a vet if kneading is new, increased or excessive. This article is not veterinary advice, and a vet who knows your cat is the right person to ask.

For the human side of living with an animal, see why owning a pet may be good for your health.

“But wait…”

If cats have scent glands in their paws, isn’t kneading you obviously a way of claiming you? It could be, and Hazel allows that it is possible. But glands in the paw pad are also part of how a foot grips, according to the 1989 study, and nobody has shown that kneading moves scent onto a person. The claim sounds persuasive because it flatters us, which is a reason to hold it loosely.

Related questions

Do wild cats knead? The McGrath review says kneading, meowing and purring are commonly seen in juvenile felids but unlikely to be performed by adult undomesticated cat species in captivity. The authors read this as consistent with domestic cats keeping juvenile signals into adulthood. It is an interpretation of a pattern, not a study of wild cats kneading.

Why does my cat drool or suck while kneading? Hazel told Live Science that cats may drool and even suckle the surface they knead, and she sees this as support for the nursing explanation. Hazel and Henning add that kneading and sucking can become compulsive in some individuals.

Is it a sign my cat was weaned too early? None of the sources we read links kneading to early weaning, and the peer-reviewed papers we found do not address it. They describe kneading as part of ordinary cat behaviour.

Is there a dog version of this puzzle? Grass eating is one. In why dogs eat grass, the leading explanation is also an inherited trait that nobody has directly tested.

In one sentence

Cats probably knead because kittens do it to keep milk flowing and adults associate the movement with comfort, but that explanation, along with the scent and nest-making ideas, has not been directly tested.

Quick check: did it click?

1. What does International Cat Care say kittens do with their paws while feeding? They knead their mother’s stomach to keep the milk flowing.
2. What did the 1989 footpad study show, and what did it leave out? It concluded the footpad glands improve grip and leave scent marks, but it was a tissue study that did not look at kneading.
3. What should you do if kneading hurts your legs? Put a thick blanket or cushion on your lap, keep nails trimmed, reward claw-free kneading and do not punish the cat.

Read next

• Why do cats purr? How the sound is made and what it means
• Why do dogs eat grass? What the evidence says about illness, vomiting and instinct
• Why owning a pet may be good for your health

Disclosure: This article was drafted with AI assistance and checked against the sources below. The arithmetic in the numbers expander is a SciQuest calculation, and the evidence graphic is an original SciQuest design drawn from the cited sources. We read the full text of the International Cat Care page, The Conversation article, the Live Science article, the CatWatch article, the PetMD article and the open-access papers by Haywood et al., Nicholson and O’Carroll, Finka and McGrath et al.; Meyer and Bartels (1989) was read through its published abstract only, and we did not open the AAHA page on kneading, which blocked automated access. We did not interview independent experts for this piece. This article is not veterinary advice. Spotted an error? See our corrections policy.

Sources

1. International Cat Care, Cat pregnancy (updated 26 Sep 2025; kittens knead the mother’s stomach to keep milk flowing; birth weight and growth)
2. S. Hazel and J. Henning, Why do cats knead?, The Conversation, 8 Dec 2022 (nursing origin, neoteny, scent glands, compulsive kneading, claw advice)
3. C. Q. Choi, Why do cats knead?, Live Science, 3 Jun 2023 (comments from S. Hazel, University of Adelaide, and L. Watson, International Cat Care)
4. CatWatch (Cornell University College of Veterinary Medicine Feline Health Center), When your cat kneads you, 3 Sep 2003, updated 24 Sep 2019 (T. Kroll, DVM)
5. W. Meyer and T. Bartels (1989), Histochemical study on the eccrine glands in the foot pad of the cat, Basic and Applied Histochemistry 33(3), 219 to 238 (abstract)
6. C. Haywood, L. Ripari, J. Puzzo, R. Foreman-Worsley and L. Finka (2021), Providing humans with practical, best practice handling guidelines during human-cat interactions increases cats’ affiliative behaviour and reduces aggression and signs of conflict, Frontiers in Veterinary Science 8, 714143
7. L. Finka (2022), Conspecific and human sociality in the domestic cat, Animals 12, 298
8. S. L. Nicholson and R. Á. O’Carroll (2021), Development of an ethogram/guide for identifying feline emotions, Irish Veterinary Journal 74, 8
9. A. McGrath, D. Horschler and L. Hancock (2024), Feline cognition and the role of nutrition: an evolutionary perspective and historical review, Animals 14, 1967
10. PetMD, Why do cats knead?, H. Hart, DVM, reviewed by J. Coates, DVM, updated 31 Mar 2026 (wild-felid nesting idea; nail and claw advice; when to see a vet)