What are the unique characteristics and uses of spiky ball seeds?

Spiky ball seeds, also known as burrs, have a unique structure with small hooks or spikes that allow them to easily attach to fur or clothing for dispersal. These seeds are commonly found in plants like burdock and cocklebur. Their spiky design helps them stick to passing animals, aiding in seed dispersal. Additionally, some animals use these seeds for foraging or as a food source.