docs: def _parse_datetime_str(self, dtime_str):
          """
          Given a standard datetime string (as seen throughout the Petfinder API),
          spit out the corresponding UTC datetime instance.
  
          :param str dtime_str: The datetime string to parse.
          :rtype: datetime.datetime
          :returns: The parsed datetime.
          """
  
          return datetime.datetime.strptime(
              dtime_str,
              "%Y-%m-%dT%H:%M:%SZ"
          ).replace(tzinfo=pytz.utc)