Welcome! I am Dr. Altman, a licensed veterinarian and I am happy to answer your questions.
This behavior may be a sign of a systemic problem, or it may be nothing at all...Some dogs do this for behavioral reasons - to get attention or due to anxiety. Depending on the texture or material the taste at times can be salty and enticing for dogs.The question remains - if there is a systemic reason for it, what could that be?- Low red blood cell count - anemia. Dogs with a low red blood cell count may lick or eat abnormal things such as dirt, or bricks and concrete. This is because the dog feels like there is an iron deficiency from lower than normal red blood cells.If you have any suspicion that there may be a low red blood cell count (pale gums, lethargic, fast heart rate, fast breathing, etc.) then I would recommend making an appointment to see your veterinarian.A quick blood test can look at the red blood cell count, and potentially look for other diseases or problems such as electrolyte abnormalities.
This is actually called PICA, CLICK HERE for more information which is a term for eating non edible items
Please let me know if I can be of any further assistance to you both but since it is frantic and a new behavior I would advise a veterinary exam and basic bloodwork to rule out a medical cause for this new behavior
If you have more questions or if I can help in any other way, please do not hesitate to ask! If you would like to accept my answer, please press RATE OUR CONVERSATION. Bonuses are always welcome (I am not compensated in any other way). Thanks!
If you have additional questions after you rate the question, you are welcome to request me for additional conversations if I am on-line or by beginning your question "Dr. Altman..." or "Dogdoc4u..." and others will leave the questions for me. Good luck to you both!!!