Kneading originates in the kitten's alternating press on the mother's mammary area to stimulate milk flow, and most cats keep the pattern after weaning.
Adults knead soft surfaces with purring and half-closed eyes, read as a relaxed throwback to kitten security, most often before sleep and after waking.
Paw pads carry scent glands, so kneading also leaves the cat's signature in the blanket; when claws catch, add a thicker blanket rather than punishing.
If pressing turns into compulsive sucking or biting of one spot, especially in early-weaned cats, consult a vet about stress and behavioral assessment.
