In Pennsylvania, dog bite claims are governed by strict liability under the Pennsylvania Dog Law (3 P.S. § 459-502-A) and negligence principles. Owners are strictly liable if their dog has a history of biting or is deemed “dangerous” (e.g., unprovoked attacks or aggressive tendencies). Without strict liability, negligence claims require proving the owner’s failure to control the dog caused the injury. Key claim elements include proving injury, causation, damages (medical costs, lost wages, pain and suffering), and ownership. Dogs classified as “dangerous” under 3 P.S. § 459-501-A face strict owner requirements, and non-compliance strengthens claims. Defenses include provocation, trespassing, or comparative negligence (Pennsylvania’s 51% rule). The statute of limitations is two years (tolled for minors until age 18). Recoverable damages include medical expenses, lost income, pain and suffering, and, rarely, punitive damages. Homeowner’s insurance often covers claims, though breed exclusions may apply. Victims should seek medical care, gather evidence, report to animal control, and consult an attorney. Local leash laws may support negligence claims.