sorry, I don't have any answers for you either. Mia has done that to one of my rugs. Thank goodness it has only been a rug, so far! I have noticed that she only does it in the mornings when everyone else is asleep and I am getting ready for work... so there isn't anyone paying attention to her. Even though she has plenty of toys she can play with, she will entertain herself by pull the threads out of my rug. (and I'm talking about her being left alone for 15-20 minutes, not hours!)
I have NEVER seen her doing this... but I have the holes to confirm that she is indeed the culprit! My solution has been to keep the rug around, at least this way she leaves my carpet alone...
When the holes stop growing, I will just buy a new rug!
