Buster stops to snap at some bugs flying around in the grass, and to bark at a squirrel, and to pick up something dead, making it vanish into his inventory before Autor has the chance to spot him.

When someone walks down the other side of the road, Buster immediately switches from curious exploration to attack mode. He barks and growls at the person, trying to put himself between the other person and Autor. It makes the other person look warily their way and pick up the pace.