News ‘Shark Tank’ recap: Sharks growl over cost of cutting-edge science for man’s best friend November 17, 2019Matthew Wilson, Special to USA TODAYComments Off on ‘Shark Tank’ recap: Sharks growl over cost of cutting-edge science for man’s best friend On Sunday's "Shark Tank," a former high school science teacher and entrepreneur was on a mission to save man's best friend from the effects of aging.