Many cats lick excessively as a compulsive disorder and we feel it is because they were weaned off of their mother's milk too soon. The suckling and licking that a cat does releases "feel good" hormones called endorphins and essentially calm the cat down. It is like a young child sucking their thumb when they're upset.
I'm sure it probably is harmful. I would ask a vet. right away!
my cat not only licks but actually consumes plastic and paper (bathroom tissue, napkins, etc.) I worry about this being harmful to her in the long run. She is 4 yrs old and has always done this but it has become worse. I give her plenty of food all day long. She weights about 12 lbs. Will this harm her and how can I change this behavior?
Thank you for helping me with the questions I sent you. very helpful. thanks.