Cows knead with their hooves to stimulate milk let-down, a process known as milk ejection. This behavior, often seen in young calves nudging their mothers, mimics nursing and triggers the release of oxytocin, which causes milk to flow.

why do cows knead

The Science Behind It

The kneading behavior in cows, primarily observed in younger animals and sometimes adults, is deeply rooted in their biological imperative to obtain milk. Calves instinctively knead their mother's udder with their front hooves to stimulate milk let-down. This action triggers the release of oxytocin, a hormone that causes the muscles surrounding the milk glands to contract, pushing milk into the ducts and teats. Adult cows may continue this behavior due to ingrained instinct or as a sign of contentment and comfort, especially when being milked or petted. It's a learned response from their calfhood, reinforcing the association between physical stimulation and the reward of milk.

Fun Facts

The kneading reflex in cows is primarily driven by the hormone oxytocin, which is also known as the 'love hormone'.
This kneading behavior is most pronounced when a cow is relaxed and comfortable, indicating a state of well-being.