And it suits a Lab sense of humour to lull you in to a false sense of security :D Seriously mine have only really done damage once they were well past the puppy chewing stage, cos those big teeth can go through a thing in seconds. We recon that was how we got a hole in the carpet from a 4 year old Lab, we think there may have been something spilt and it started as a lick and progressed to a hole! He did at least look sorry when we got home.