Abstract: A pet-related system with a first dog collar operably configured to determine if the first dog collar is at or outside of a first user-selected geofence boundary; and a mobile electronic device communicatively coupled to the first dog collar. The mobile electronic device is operably configured to display a user interface of a first instance of a pet-related social network application associated with a first social network identity; receive a user input selecting the first user-selected geofence boundary of the first dog collar; communicate the first user-selected geofence boundary to the first dog collar; and receive a proximity notification of the mobile electronic device's proximity to a second mobile electronic device communicatively coupled to a second dog collar and operably configured to execute instructions of a second instance of the pet-related social network application associated with a second social network identity.