Chuck Negron was the long-haired, mustached lead singer on the Three Dog Night superhits "Joy to the World, " "Old Fashioned Love Song, " "Easy to Be Hard, " "Pieces of April, " and many others.

NPR: 'The Harder They Fall': Fame and Addiction

He started using the FURminator on his dog, Turkey, a suspected long-haired Chihuahua-dachshund mix.

WSJ: A 'Comb on a Stick' Creates