A dog was examined because of thunderstorm-associated anxiety behaviors, including pacing, whining, owner-directed attention-seeking, and trembling, of > 1 year's duration, with increasing severity over time. The dog was an apparently healthy 4-year-old 40.1-kg (88.2-lb) castrated male Golden Retriever. The owners had obtained the dog from a breeder at 8 weeks of age as a companion. The dog was castrated at 9 months of age with no complications. At the time of the behavioral evaluation, the owners had 3 other dogs (all spayed females ranging in age from 19 months to 7 years) and a 9-year-old spayed female cat. One of the owners was generally home with the animals during the day, with occasional departures of 3 to 4 hours' duration. The dog's ownersreported that it assimilated easily into their household, was easy to housetrain, and was generally mild mannered and affiliative toward them and the other animals in the home. Prior to 3 years of age, the dog did not have any fearful behaviors related to thunderstorms.
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