Pet parents have lots of questions about why dogs lick.. you just dropped food, there's no normal reason why a dog should regularly lick the carpet or furniture.
Difficult as it is to believe, your dog may have a perfectly good reason for licking these surfaces. Crumbs on the furniture and floor are obvious inducements.
Obsessive Compulsive Disorders. Dogs are capable of developing obsessively compulsive behaviors.. Your dog may lick the air, carpet, bed, walls or himself. OCD is caused by stress, so to treat this behavior you should eliminate any environmental stressors that cause him to lick in the first place.
My dog licks the air, your arms, your face, in your mouth, other dogs, furniture, herself. before we can even begin to work on her dog obsessive licking behavior.