where does the purr come from in a cat
Purr One hypothesis, backed by electromyographic studies, is that cats produce the purring noise by using the vocal folds or the muscles of the larynx to alternately dilate and constrict the glottis rapidly, causing air vibrations during inhalation and exhalation.[2] Combined with the steady inhalation and exhalation of air as the cat breathes, a purring noise is produced with strong harmonics.[3] Despite competition from various contenders, the record for the loudest purring cat continues to be held by Smokey, owned by Ruth Adams (UK). On 25 March 2011, Smokey purred at 67.7Â dB.[4]
Cougar The cougar (Puma concolor), also commonly known as the mountain lion, puma, panther, or catamount, is a large felid of the subfamily Felinae native to the Americas. Its range, from the Canadian Yukon to the southern Andes of South America, is the most widespread of any large wild terrestrial mammal in the Western Hemisphere.[3] An adaptable, generalist species, the cougar is found in most American habitat types. It is the second-heaviest cat in the New World, after the jaguar. Secretive and largely solitary by nature, the cougar is properly considered both nocturnal and crepuscular, although there are daytime sightings.[4][5][6][7] The cougar is more closely related to smaller felines, including the domestic cat (subfamily Felinae), than to any species of subfamily Pantherinae,[1][8][9] of which only the jaguar is native to the Americas.