Tap the pasture to roll a tumbleweed in. Cows bolt away from it, and panic spreads cow to cow.
Every bell ring is Clang. Collisions and long stampedes build combos. Fill the meter for Cowbell Fever (double Clang).
Hooves till the dirt. Clover sprouts in the furrows and raises how many cows your pasture can feed.
Strays hear the racket and join after each job. New breeds show up as you finish jobs. Collect them all in the Herd Book.