No statute, pure common law
Idaho has no dog bite statute — recovery rests entirely on common-law theories: negligence, scienter (the owner's knowledge of the dog's dangerous propensities), negligence per se, or intentional tort. This is the "one-bite rule" in its traditional form, requiring proof the owner knew or should have known of the risk.
A real path around that requirement exists: if the dog was in violation of a local leash ordinance or Idaho's dangerous dog statute (Idaho Code §25-2805) at the time of the bite, that violation can establish negligence per se — letting a victim recover without proving the owner's actual prior knowledge.