  Being able to assess dog personality can be used to, for example, match
shelter dogs with future owners, and personalize dog activities. Such an
assessment typically relies on experts or psychological scales administered to
dog owners, both of which are costly. To tackle that challenge, we built a
device called "Patchkeeper" that can be strapped on the pet's chest and
measures activity through an accelerometer and a gyroscope. In an in-the-wild
deployment involving 12 healthy dogs, we collected 1300 hours of sensor
activity data and dog personality test results from two validated
questionnaires. By matching these two datasets, we trained ten machine-learning
classifiers that predicted dog personality from activity data, achieving AUCs
in [0.63-0.90], suggesting the value of tracking the psychological signals of
pets using wearable technologies.
