"Farmer Lee Ranney, at his Valtie, New York farm, notes a dramatic shift in livestock practices: before 1940 the average age of a harvested animal was 4–5 years, whereas today it’s typically 12–15 months. To illustrate how age affects meat, he presented three grass-fed cows aged 28 months, 8 years, and 15 years for tasting and comparison." - Eater Video