When filing a dog bite complaint, the plaintiff may pursue multiple theories of liability against the dog owner. The Animal Control Act holds dog owners strictly liable for bites and attacks by their dog. E.g. 510 ILCS 5. Prior to the passage of the Animal Control Act, a plaintiff was forced to bring a negligence cause of action. In such cases, a dog owner could plead an affirmative defense that he or she lacked knowledge that the dog would attack or bite–commonly referred to as the “one-bite” or “scienter” rule. Klatz v. Pfeffer, 333 Ill. 90, 94-95 (1928).
The Illinois legislatures adopted the “dog bite” statute, which eliminated the scienter rule. The modern “dog bite” statute states, in part: “If a dog or other animal without provocation attacks or injures any person who is peaceably conducting himself . . . the owner of such dog or other animal is liable in damages to such person for the full amount of the injury sustained.” 510 ILCS 5/16. The Illinois Supreme Court in Beckert v. Risberg held that the elements necessary to sustain an action under this section are: (1) proof of injury by the dog; (2) lack of provocation; (3) peaceable conduct; and (4) presence of the plaintiff in a place where he or she had a right to be. 33 Ill. 2d 44, 46 (1965); See https://www.chicago-injury-lawyer.org/dog-bite/. Accordingly, a dog owner may only defend an action under the statute by proving that the victim was creating a disturbance, trespassing, or tormenting the dog in a way that provoked the attack.
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