My recently adopted 3 year poodle won't chew on any of the detal chew products I have bought for him. I have gotten Nylabones, Pedigree Dental Sticks, and some green bones with parsley, chlorogphyl, etc for good breath. He picks them up, takes them to another room where he hangs out and put them there. But never touches them again. What can I do to encourage him to chew on them? I am going to the vet in the next couple of weeks and will ask him to show me how to brush his teeth, but I also want him to chew on these dental products. He won't even play with his Kong, even when I put treats inside and top it with peanut butter. Since he was a stray he is a bit thin and can use to gain 4 lbs or so. He eats his food, but not as much as they told me he should be eating. Any advice?