In 2009 the author initiated his “zoonetics” activities by recording purring in the male cheetah Caine as well as in the domestic cat Misha and presented the results at the Fonetik Meeting in 2010 at Lund University. Subsequent studies of cheetah purring then followed, including a study of purring in Caine’s daughter Jade and son Parker in 2013, Jade at the time 7 months old. In May 2019 the author recorded Jade again (now 7 years old) and was then able to study whether any changes in her purring had occurred and, specifically, whether Jade as an adult had kept her cub characteristics or was now more similar to her father, who was 7 years old when he was recorded. To the best of my knowledge this study presents the first longitudinal study of purring in a cheetah.