Cats use a causal-logical understanding of rattling containers

Researchers shook opaque containers in front of cats; some rattled and some were silent, and the experimenter then tipped each to reveal whether an object fell out. Cats explored more and showed expectancy violations when the outcome defied physical logic, such as a rattling container producing nothing or a silent one dropping an object. The pattern suggests cats infer the presence of unseen objects from sound and link rattle to content, a rudimentary causal reasoning that could aid predation by anticipating hidden prey. The study extended physical cognition research, long focused on primates and birds, into the domestic cat.