"The Plummer Terrier is a working terrier and an all purpose sporting dog. It should display a lively , active and alert appearance. Keen to hunt vermin above and below ground , fearless, confident and bold but not overly aggressive. Intelligent, courageous and tenacious, not prone to give tongue without good reason. Nervousness and cowardice should not be shown. He should be equally at home in the house as in the kennel, biddable , affectionate and friendly but not submissive."