I think as they get older they can play alot rougher with their toys then when they were puppies. I noticed my puppy like to sit on the floor with her toy and chew and nibble and she even throws it herself and goes after it, but when she gets older I can see the little toys just getting torn apart because her teeth will stronger and she will be more aggressive with her little toys and I mean if the toys are older then it's just bound to happen.