Pennsylvania Dog-Bite Injury Laws and Owner Liability Rules

Dog owners in Pennsylvania can be held financially responsible for damage and injuries caused by their pets. In the most serious cases, owners can face the loss of their pet and even criminal penalties. Whether you own a dog in Pennsylvania, or have been hurt by someone else's pet, it's important to understand how these rules apply to you.

Dog Owners Are Strictly Liable for Victims' Medical Expenses

The majority of states in the U.S. have “strict liability” statutes that make dog owners responsible for most dog-bite injuries, even if the dog didn’t have a history of being aggressive or the owner wasn’t negligent. Under Pennsylvania’s limited version of this kind of law, any time a dog bites or attacks someone, the owner must pay for all of the victim’s related medical treatment. However, the law doesn’t make the owner responsible for other damages, like pain and suffering or lost income.

3 Pa. Stat. § 459-502(b)(1) (2024).

Liability for Negligent Pennsylvania Dog Owners

If you’ve been hurt by someone else’s dog, you may have another way of getting compensation for your damages: suing the animal’s owner for negligence (legalese for being unreasonably careless). A negligent owner can be held responsible for all of a victim's damages, not just medical expenses.

Pennsylvania courts have set out some rules for what it takes to win a dog-related negligence case in the state. The victim must prove that the owner:

• knew the dog had “unmistakably vicious tendencies,” and
• neglected to control it properly.

A dog might show vicious tendencies without actually biting anyone. At the same time, a single previous bite doesn’t necessarily make a dog vicious. (Deardorff v. Burger, 606 A.2d 489 (Pa. Super. Ct. 1992).)

Courts will generally conclude that dog owners were negligent if they violated the state law that requires dogs to be restrained at all times This is also true if owners don’t meet the legal requirements for dealing with dangerous dogs (more on that below). (3 Pa. Stat. § 459-305 (2024); Miller v. Hurst, 448 A.2d 614 (Pa. Super. 1982)).

Legal Defenses for Dog Owners

Dog owners may have legal defenses when they’re sued for injuries their animals have caused. For instance, the owner may argue that the victim:

• was hurt when the dog escaped a properly fenced yard
• was trespassing where the animal was confined
• voluntarily assumed a risk of being hurt (a rule that usually applies when dogs hurt veterinarians), or
• was at least partly to blame for the injury (for example, because they provoked the dog).

Under Pennsylvania’s “comparative negligence” rule, a victim who was more at fault than the owner won’t receive any compensation for the injury. But if the victim’s share of the blame was 50 percent or less, the compensation will simply be reduced in direct proportion to the percentage of fault. (42 Pa. Cons. Stat. § 7102 (2024).

Criminal Liability for Owners of Dangerous Dogs

A Pennsylvania dog owner could be charged with a “summary offense” (a low-level crime similar to a traffic violation) for harboring a dangerous dog if the animal has a history of unprovoked attacks or vicious tendencies and has:

• attacked or seriously injured a person without provocation
• severely injured a domestic animal without provocation away from the dog owner’s property, or
• been used to commit a crime.

An owner who’s found guilty of this crime will be fined (as much as $500) and will have to meet several requirements, including:

• registering the dangerous dog and having a special microchip implanted in the animal
• keeping the dog properly confined in an enclosure or muzzled and restrained
• posting a conspicuous sign on the owner’s property with a symbol that will warn children away
• paying court-ordered restitution to a victim hurt by the dog, and
• having the dog spayed or neutered.

Misdemeanor charges will follow if the owner doesn’t meet these requirements, or the dangerous dog attacks a human or domestic animal as a result of the owner’s intentional, reckless, or negligent actions. In addition, the animal will be destroyed.

(3 Pa. Stat. §§ 459-502-A (2024); 3 Pa. Stat. § 459-503-A (2024); 3 Pa. Stat. § 459-504-A (2024); 3 Pa. Stat. § 459-505-A (2024); 3 Pa. Stat. § 459-506-A (2024).)

Getting Help With Your Dog-Bite Case

If you've been harmed by a dog, or someone claims they were hurt by your pet, consider speaking with a personal injury lawyer. An attorney with experience handling these cases can explain how Pennsylvania law applies to your situation, and help you decide how to proceed.