When sami tried to shape her pet squirrel's behavior to fetch marbles in the back yard, things proceeded quite smoothly at first. then the squirrel started burying the marbles rather than bringing them to her. this behavior pattern is likely?

This behavior is called a naturalist behavior. All organisms act in distinct and certain ways depending on the genome that is embedded deep within their DNA codes. Regardless if an animal is trained to do a particular activity, there will still be lapses with this because the organism follows codes within its genome to perform tasks that are ultimately geared at survival and adaptation.