I agree.. that would be my fear.
I don't have a dog but the way my luck goes I would run into a McDonalds to use the restroom and someone would smash out my window in those 3 minutes.. you know when the car went from 70 to 73 degrees,... totally horrific stuff happens at 73F...
It would be cool if it was like Tesla with a sentry but if in Pet mode if someone came up to the vehicle it would say "pet mode is activated.. pet is safe for approximately 7 hours with current charge level" so people would be like "Oh never mind then..."