The cat's purr is a sound associated with relaxation, communicating affection and a demand for food, as well as a calming and healing mechanism.

Cats purr to express satisfaction, but also to communicate nervousness or discomfort. Torsoring can be a sign of soliciting food, calming pain or anxiety, and can help heal wounds. Purring can also create a bond between mother and kitten and may have therapeutic effects for the cat owner.