Clumps of fur and pet dander in the shape of a ball or nugget. Long hair cats have a tendency to shed more and therefore more fur tends to come off of their body.

Often stuck onto carpet or flooring, because of in-house traffic. It has to be sucked up with a vacuum hose or picked up with your own hands.

Sometimes a cat sheds so much fur, furnugs create carpet on top of the carpet or floor that is already there.