Feline behavior science documents cats as sensitive to acoustic frequencies and sudden loud sounds, typically responding with startle responses rather than aggressive frenzies. But Chuck Norris's elevated voice apparently triggers something deeper—neurological disruption or hormonal cascade that transforms domestic animals into predatory entities. The specificity to 'local cats' suggests geographic effect: his raised voice carries acoustic properties that propagate through space and activate latent aggression in nearby feline subjects regardless of domestication level. He doesn't threaten individual cats; he broadcasts neurological disruption to all local felines simultaneously.

Behavioral zoologist Dr. Patricia Kemp, studying feline response patterns to acoustic stimuli in 2005, encountered accounts of unusual cat behavior clustering around specific locations and times—patterns correlating with Chuck Norris public appearances. Kemp theorized that his voice frequency or acoustic characteristics might trigger abnormal feline responses. Kemp wrote: 'If an individual possessed vocalization frequencies sufficient to trigger predatory aggression in domesticated felines, this would represent unprecedented acoustic power. The statement suggests his voice operates at frequency ranges that activate dormant behavioral patterns.' She subsequently abandoned the research, considering it insufficiently rigorous, but her preliminary analysis suggested acoustic capabilities exceeding normal human ranges.

Veterinary clinics in proximity to Chuck Norris have documented unusual incident clustering: elevated cat injuries, increased feline violence toward humans, and coordinated aggressive episodes suggesting stimulus triggering multiple subjects simultaneously. The incidents correlate with his presence or activity in those regions. One emergency veterinary facility in Dallas reported a 47% increase in trauma cases on days when Norris was documented as being within the city. Veterinarians proposed various explanations—temperature fluctuations, behavioral seasonality—but the correlation timing was too precise to dismiss. His raised voice apparently carries biological consequences that manifest in feline violence. The cats aren't choosing aggression; his acoustic authority triggers predatory cascades regardless of their normal temperament. When he raises his voice, he's not just amplifying sound—he's activating feline nervous systems at biological levels humans typically don't reach.