A study of pet cats presented recordings of their owner's voice versus a stranger's. The cats showed measurable physiological and behavioral responses — ear movements, head turns — distinguishing their person's voice from a stranger's.

Interestingly, cats often did not come when called, even by their owner. The research suggests cats perceive the difference but are selective about responding — a familiar theme in feline behavior.

This fits a broader picture: cats form strong social bonds and use vocal, olfactory, and visual cues to recognize people. They simply express recognition on their own terms.

For owners, the takeaway is reassuring — your cat very likely knows your voice. The aloofness is temperament, not a failure to recognize you.