Larry the no 10 cat shakes his head as he patrols Downing Street in central London on Nov. 30, 2021. (Image credit: DANIEL LEAL via Getty Images) Most cat owners are familiar with the funny head shake their pets do, often after eating, drinking or enjoying a nice cheek scratch ​​‪—‬ they flick their head back and forth a mile a minute. Dogs and other mammals are known to show similar behaviors. So why do our furry friends shake like this, and does it mean something is wrong? Why cats shake their heads Sign up for our newsletter! (Image credit: Marilyn Perkins / Future) Sign up for our weekly Life's Little Mysteries newsletter to get the latest mysteries before they appear online. Cats shake their heads when the nerve endings on their heads are stimulated, Sarah Crowley , an anthrozoologist at the University of Exeter in England, told Live Science. "The physiological driver for it is stimulation of the very sensitive hairs and nerve endings around the top of the head, particularly around the ears," she said.…