Many spot on treatments such as Frontline Plus and Revolution are effective for other skin parasites as well. (dog-health-guide.org)
Fleas, mites, and other skin parasites, skin allergies, irritant skin diseases, ear and anal gland infections, and neglected grooming are other factors that can initiate the itch - scratch - itch cycle. (petsmagazine.com.sg)
Cats occasionally have other skin parasites, mange mites, ticks and even lice, but they are not common causes of licking, scratching or hair loss in cats. (2ndchance.info)