Dog bite claims in Ontario

A dog bite claim in Ontario does not require you to prove the owner did anything wrong. The Dog Owners' Liability Act makes the owner liable for the damage, and the idea that every dog gets one free bite has never been Ontario law.

About this work

Why is this easier than an ordinary injury claim?

Because the two hardest things to prove are removed by statute. In a negligence claim the plaintiff has to establish a duty, a breach of the standard of care, and that the breach caused the injury. Under section 2(1) of the Dog Owners' Liability Act the owner is simply liable for damages resulting from a bite or attack.

Section 2(3) then removes the argument owners most want to make. Liability does not depend on knowledge of the propensity of the dog or on fault or negligence, so it does not help the owner that the dog had never bitten anybody, that it was normally gentle, or that they did everything a careful owner would do.

That is what people are reaching for when they mention a first bite being free. It is a rule from elsewhere and it has never applied in Ontario. The first bite is actionable on exactly the same footing as the tenth.

What remains in issue is usually the extent of the injury and the value of the claim, and sometimes whether the defendant is an owner within the meaning of the Act. Liability itself is frequently not the fight.

How the Act works

Liability without fault, and without knowledge

Section 2 of the Dog Owners' Liability Act is short and it does a great deal. It removes the two things a plaintiff would otherwise have to prove.

  1. The owner is liable for damages from a bite or attack

    On another person or on a domestic animal. That is the whole of the rule in section 2(1), and it applies to an attack as well as a bite.

  2. Knowledge of the dog's propensity is irrelevant

    Section 2(3) states that liability does not depend on knowledge of the propensity of the dog or on fault or negligence on the part of the owner. There is no requirement to show the dog had bitten before, and no first bite free.

  3. Owner includes whoever was harbouring the dog

    The definition in section 1(1) covers a person who possesses or harbours the dog, and where the owner is a minor, the person responsible for the minor's custody. More than one person can be an owner, and they are jointly and severally liable.

  4. But your own carelessness still reduces the award

    Section 2(3) also requires the court to reduce damages in proportion to the degree to which the plaintiff's own fault or negligence caused or contributed to them. Strict liability is not a bar to contributory negligence.

The route

How does the process run?

6 stages, each with its own clock

Each provision below is from the Ontario Dog Owners' Liability Act as consolidated for 2026, with the limitation period from the Limitations Act, 2002.

01

Strict liability on the owner

DOLA s. 2(1)

The owner of a dog is liable for damages resulting from a bite or attack by the dog on another person or domestic animal.

02

No fault and no knowledge required

s. 2(3)

Liability does not depend on knowledge of the propensity of the dog, or on fault or negligence on the part of the owner.

03

Contributory negligence still applies

s. 2(3)

The court shall reduce the damages awarded in proportion to the degree, if any, to which the fault or negligence of the plaintiff caused or contributed to the damages.

04

On the owner's own property, this Act governs

s. 3(1)

Where the damage is caused by a bite or attack on the owner's premises, liability is determined under this Act and not under the Occupiers' Liability Act. The occupiers' liability framework is displaced.

05

Unless you were there to commit a crime

s. 3(2)

Where a person is on the premises intending to commit, or in the commission of, a criminal act and is bitten or attacked, the owner is not liable unless keeping the dog there was unreasonable for the protection of persons or property.

06

Two years to bring the claim

Limitations Act, 2002 s. 4, 5(2)

The basic limitation period bars a proceeding after the second anniversary of the day the claim was discovered, with a presumption that it was discovered on the day of the incident.

Before the meeting

What to bring to the first meeting

6 things to bring

Bring what you have and say what is missing. A meeting with the papers in front of it settles in one sitting what two telephone calls will not.

  • The date, time and exact location of the attack
  • The owner's name and address, and anybody who was handling the dog
  • Photographs of the injury, taken over several days if you have them
  • Every medical record: emergency department, family doctor, follow-up
  • Any animal control or police report, and its number
  • The names of anybody who saw it happen

Our approach

A clear path forward

The same four steps on every matter, whether it is a refusal at the Federal Court or a ticket at the Provincial Offences court.

Book a consultation
01

Understand

We take the full history and read the documents before offering an opinion. Most bad advice comes from acting on half the facts.

02

Assess

You get a candid read on strength, timeline and cost, including when the honest answer is that you do not need to hire anyone.

03

Act

We prepare the application, the defence or the appeal properly the first time, because fixing a weak record later is harder and dearer.

04

Report

You hear from us at each stage, and you hear what a wait actually means rather than a date chosen to sound better.

Reported decisions

What has this work produced?

7 allowed of 22 reported since 2023

Public judgments of the Federal Court with Kapil Rathod as counsel of record, each checkable by citation on the court's own site. The rest were dismissed and are listed with these ones.

All case outcomes, including the client accounts

Where to go next

A dog bite claim in Ontario runs on strict liability: the owner is liable for the damage whether or not they were careless and whether or not the dog had ever bitten before.

What remains in issue is usually the extent of the injury, who counts as an owner, and whether anything you did reduces the award.

Common questions

What do people ask about dog bites?

8 answered here

Written to be read once and acted on rather than to be rung about. Each answer is complete where the law allows a complete answer.

Who counts as the owner?

More people than the person who bought the dog. Section 1(1) defines owner to include a person who possesses or harbours the dog, and where the owner is a minor, the person responsible for the custody of the minor.

Harbouring is the wide part. Somebody looking after a dog for a friend, a household member who keeps it, or a person who has taken a stray in can all fall within the definition depending on the arrangement, and section 2(2) makes multiple owners jointly and severally liable.

That matters practically because it determines who can be sued and, more importantly, whose insurance responds. Homeowner and tenant policies frequently cover this liability, and identifying every person who qualifies as an owner is often the difference between a claim that is collectable and one that is not.

Section 2(4) then lets an owner who pays recover contribution and indemnity from anybody else whose fault or negligence caused or contributed, so the allocation between multiple responsible people is worked out between them rather than being the injured person's problem.

When is the owner not liable?

The Act contains one clear exception and one real limit.

The exception is section 3(2). Where a person is on the premises intending to commit, or in the course of committing, a criminal act and is bitten or attacked, the owner is not liable unless keeping the dog on the premises was unreasonable for the purpose of protecting persons or property. A burglar has no claim on ordinary facts.

The limit is contributory negligence, which survives the strict liability rule. Section 2(3) requires the court to reduce damages in proportion to the plaintiff's own fault. Provoking or teasing the dog, ignoring a clear warning, or entering an enclosure where the dog was properly confined can all reduce an award, sometimes substantially.

Section 3(1) is worth noting for what it prevents rather than what it allows. Where the bite happens on the owner's own premises, liability is decided under this Act and not the Occupiers' Liability Act, so the notice periods and defences that apply to ordinary premises claims do not enter into it.

What should you do after a bite?

Get medical attention and have the injury documented, first and above everything. Dog bites carry infection risk that is not obvious at the time, and the medical record made in the first days is the evidence the claim is later valued on.

Identify the dog and the people responsible: the owner's name and address, anybody who was handling the dog, and where it lives. Where a bite happens in a park or on a street, the chance of identifying the owner falls quickly once everyone has left.

Photograph the injury as it develops rather than only on the first day. Bruising, swelling and scarring change over the following weeks, and a series of dated photographs is far more useful than a single one.

Report it to the local animal control or municipal authority. That creates an independent record of the incident and of the dog, and a proceeding can also be commenced in the Ontario Court of Justice against an owner where a dog has bitten or attacked, or has behaved in a way that poses a menace.

Do I have to prove the owner was careless?

No. Section 2(1) of the Dog Owners' Liability Act makes the owner liable for damages resulting from a bite or attack, and section 2(3) provides that liability does not depend on knowledge of the dog's propensity or on fault or negligence. That is what makes these claims different from ordinary negligence.

Is the first bite free in Ontario?

No. That rule comes from elsewhere and has never applied here. Section 2(3) expressly removes any requirement to show the owner knew the dog was dangerous, so a dog with no history is on the same footing as one that has bitten before.

The dog belonged to someone else who was walking it. Who is liable?

Possibly both. Owner is defined in section 1(1) to include a person who possesses or harbours the dog, and where there is more than one owner they are jointly and severally liable under section 2(2). Identifying everyone who qualifies often decides whose insurance responds.

Can my own conduct reduce what I recover?

Yes. Section 2(3) requires the court to reduce damages in proportion to the degree to which your own fault or negligence caused or contributed to them. Provoking the dog or ignoring a clear warning can reduce an award even though liability itself is strict.

How long do I have to make a claim?

Two years from the day the claim was discovered, under section 4 of the Limitations Act, 2002, with a presumption under section 5(2) that you discovered it on the day it happened. That is the ordinary personal injury period and there is no shorter notice requirement of the kind that applies to slip and fall claims.

Speak to someone this week

Bring the photographs, the medical records and the owner's details. A dog bite claim in Ontario is built from the medical record made in the first days.

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