Hi all! I have a question. Do your adult chi's like toys? As puppies my dogs entertained themselves with chew toys, soft and hard, played hard. Now as 4,7, and 10 they don't care about the toys. I have LOADS of toys that sit in their place all day. Dogs sleep much of the day, rising for meal times, and occasional play between the 4 and 7 year old. The 10 year old has heart/trachea problems and is not interested. Any ideas, or are they just uninterested?