Not quite a pet but it's outside mowing my lawn for me right now! Got much closer to a cow elk with the spark yesterday evening. She held her ground much more. I'd guess I flew within 2 feet of her (elk) nose and she never moved.
As a former wildlife officer let me advise not to get too close to these elk in case your Spark crashes and you want to retrieve it before they step on it. Elk (or Moose) aren't really afraid of anything for good reason as they can stomp to death any creature that walks this earth and do when provoked.