So I have a dog inside who constantly sheds & hairballs end up in the floor a lot. My little duck is also inside, & roams around the house. I vacuum the house religiously but there are still almost always hairballs in the floor. Just a minute ago, the duck picked one up off of the ground before I could get to him. When I ran over to pull it out of his mouth, it was gone... Will eating dog fur hurt him? I feel like it would stop him up & I really hope it doesn’t hurt him too bad. Is there anything I can do to help him?