I have an 8 year old Jack Russell Terrier, in great health, well behaved and a sweetheart of a dog. My question is, why dose she want to lick things all the time? floor boards, carpet, blankets, my leg. I don't use chemicals in our home, so the base boards are only painted and have been done so years ago. Her diet and exercise is great, as is her weight. It's kinda making me nuts. Any ideas?