Smokey, a grey tabby owned by Lucinda Ruth Adams, achieved a purr that pushed the needle to 67.7 dB at its home in Northampton, U.K., "where it felt relaxed and happy," Guinness said.
The record purr was measured by a Class 1 sound level meter and witnessed by a vet, a representative of a Northampton Cats Protection, a local MP and a sound engineer, Guinness said.
The loudness of Smokey's purr falls into the same ranges as normal conversation and normal piano practice, both of which are between 60 to 70 dB. The record-setting purr is quieter than both the dial tone of a telephone (80 dB) and the sound of city traffic inside a car (85 dB).Smokey set the loudest purr record on March 25 of this year. The record was confirmed Aug. 11.