Help! my 14 month old puppy Piper is constantly eating sticks, twigs and leaves. I tug on her lead when we are walking and say No or leave it and it's never-ending! When we let her out in the fenced in yard that is all she does. We feed her regularly and she gets treats. Is this normal? will it stop? Sometimes her poop is hard and I can see all the wood in it. My husband seems to think this is normal and ok. I worry that it can harm her digestive system or colon! Help!