* Burdock (Arctium lappa): Burdock seeds have hooked structures called burs that easily attach to fur, clothing, and other surfaces.
* Cocklebur (Xanthium strumarium): Similar to burdock, cocklebur seeds also have spiky burs that effectively cling to fur and spread the seeds.
These seeds use this method of dispersal, called zoochory, to travel to new locations and ensure the survival of their species.