It is not a defense that the dog has never shown vicious behavior or bitten anyone in the past. In the case Supan V. Griffin, Griffin failed to provide evidence that the dog had ever bitten anyone in the past. However, the owner made a comment to his neighbor which “raised genuine issue of material fact as to owner’s knowledge of his dogs’ tendency to attack” and allowed the court to rule against the dog owner. This is similar to Roberts’ case in the fact that Chip has never bitten anyone, but, the owner knew of the dog’s propensity to chase down the football. Again, Robert’s knew of the dog’s inclination to celebrate and chase down the ball, even if it landed in the stands, and knew the possibility of injuring a patron. The injuries sustained