The barber pole worm life cycle involves mature worms releasing eggs in feces, which hatch into neonates that climb grass and reinfect hosts.

“the mature worm is stuck through with much mouth to the wall of the intestine it sucks blood all day long it spews sperm and eggs and get fertilized in the intestine when the animal defecates that that worm egg fertilized worm egg is in the feces it hatches and all neonates baby worm climbs up a stalk of grass in the animal reinfects itself for its neighbor by eating that grass”