If you have watched a cat press its front paws rhythmically into a blanket, you have seen kneading. But why do cats knead long after kittenhood?
There is no single proven explanation. The behavior probably combines early instinct, comfort, scent communication and preparation of a resting place.
Kittens knead around their mother while nursing. The movement is associated with warmth, food and safety, so some cats may retain it as a comforting behavior throughout life.
Adult cats commonly knead soft blankets, beds or a trusted person before settling down. Purring, half-closed eyes and a relaxed body usually suggest that the cat feels secure.
However, kneading is not a reliable measure of affection by itself. Cats have individual habits, and some rarely knead at all.
Cats have scent-producing glands around their paws. Pressing and flexing the feet may help leave a subtle familiar scent on a resting area.
The repeated motion may also echo the ancestral habit of pressing vegetation into a more comfortable sleeping spot.
Occasional kneading is usually harmless. Ask a veterinarian for advice if it becomes sudden and excessive, accompanies agitation, damages the paws or appears alongside changes in appetite, movement or normal behavior.
Cats most likely knead because an early-life instinct remains soothing and useful. In a relaxed cat, it is generally a normal part of settling down.