You're an experiment. Your mother, Heather Hargrove worked as a marine. Your father, Patrick Hargrove was a scientist who took drugs, killed your mother and did the cruelest things to you. As a result of your father's 'experiments', you became an animal hybrid.

Gibbs, Tony, Ziva and McGee are searching the building, trying to find your father, they never had a clue about you. You were locked in a dog cage with a blanket over you, Gibbs walked into the room where you were.