How do beggar-tick plants use barbed pappus awns to spread seeds?

Beggar-tick plants (genus Bidens) utilize their barbed pappus awns to facilitate seed dispersal through a process known as epizoochory, or the inadvertent transport of seeds by animals.12

In these plants, the achenes—the dry, single-seeded fruits characteristic of the Asteraceae family—are equipped with pappus awns that feature small barbs. These barbs allow the seeds to cling tenaciously to the fur of passing animals or to human clothing. By "hitching a ride" on these carriers, the seeds are transported away from the parent plant to new locations, effectively spreading the species.312