Zachary's dog buddy, like many dogs, enjoys chasing the little red spot of light from a laser pointer when zachary moves the light around the carpet. zachary's new puppy zoe observed buddy chasing the light, which drew her attention to the light, and she began chasing it just like buddy did. this is an example of:

I believe the answer is: Stimulus enchancement

Stimulus enhancement refers to an exposure toward a certain stimulus that make the observer aware on the relationship between the stimulus and the result. In the scenario above, the new dog is the observer,  buddy chasing the lgiht is the stimulus, and Zoe follow in chasing the red light is the result.