I had a good time painting this, as I wondered just who the intruder really is. Is it the car, the buffalo, the dog, the boy or all of them?
What is the boy worried about… the car that obviously is not his own, but that he’s apparently allowed to drive, his faithful companion, the dog or his own safety?
We see a car broken down from running through the stream (wet spark plugs?) and the boy in front, perhaps cranking the motor, when the buffalo arrives.
The dog is attempting to protect the boy, while the boy doesn’t know what to do and just wants both the dog and the buffalo to cool it. What happens next is anyone’s guess.