7 year old Shih Tzu started digging in chair
We've had one of our Shih Tzus for 5 yars and he's always been a darling. All of a sudden he has started digging at the back of the chair I usually sit in. He's almost dug through the fabric. I tried putting a towel over the back of the chair, but he just keeps clawing at it until it falls down and then he digs in the same spot again. DM thinks he might be mad at me because I went to visit DD for a few days, but he's always been DH's dog, and doesn't ususally care wether I'm around or not. Any ideas?