Cows like to share their recycled matter with others, mainly flies. I think it is one of nature’s circles of life. The cow eats hay, and drops the recycled matter on the ground. The flies build a home in it for their many offspring and when the youngsters have hatched, the rain washes the remainder away. It is not putried, just one of nature’s byproducts.
FOWC with Fandango: Putrid