What to Do When Your Dog Bites Someone in Ontario — Legal + Behaviour Guide

Your dog bites someone. Not a play-bite on another dog. A bite on a human — a neighbor, a contractor, a child at the park. Breaking skin, maybe damage, definitely fear.

Your first instinct is panic. Your second instinct is to downplay it or hide it. Both are wrong. This is the step-by-step legal and behavioral guide for what happens now.

The Legal Immediate Action (First 24 Hours)

1. Ensure the Victim Receives Medical Care

If the bite caused any injury:

• Offer to pay for immediate medical attention (doctor visit, urgent care, hospital)
• Do NOT apologize in a way that admits liability (say "I am very sorry this happened" NOT "I am so sorry my dog bit you, I take full responsibility") — the wording matters legally
• Get the victim's contact information and full details of the incident

2. Report the Bite to Toronto Animal Services or Your Local Municipality

In Ontario, depending on where you live:

• Toronto: Report to Toronto Animal Services (311 or in person) — mandatory for bites
• Durham Region (Markham, Pickering, Ajax, Whitby): Durham Animal Care & Control
• Peel Region (Mississauga, Brampton): Peel Animal Services
• York Region (Vaughan, Richmond Hill): York Regional Police (animal services unit)

What reporting does:

• Creates a formal record (necessary for insurance, legal protection)
• Triggers a quarantine period (10–14 days; the dog is observed for rabies symptoms)
• Activates the municipality's dangerous dog assessment process
• Protects you legally (failure to report is a violation; reporting shows compliance)

Do not hide the bite. If the victim reports it and you did not, you face additional penalties and lose legal ground.

3. Notify Your Homeowner's or Renter's Insurance

Most policies cover dog bite liability up to $100,000–$500,000. Report the incident immediately:

• Insurer name, claim number
• Incident details (date, time, location, victim info)
• Injury extent (medical records)
• Witness information

Cost: Deductible is typically $500–$1,000. Insurance covers medical bills and legal costs beyond that.

4. Take Photos (Carefully)

• Photograph your dog (whole body, face, teeth, size)
• Photograph the location (context of where the bite occurred)
• Do NOT photograph the victim's wound unless they consent in writing

This documentation helps later if the case becomes disputed.

The Rabies Quarantine and Observation Period

In Ontario, post-bite quarantine is mandatory for 10–14 days depending on the municipality.

What happens:

• Your dog is placed in quarantine (at home with restrictions, or at a municipal facility)
• Daily observation for signs of rabies (excessive drooling, aggression, fear, paralysis)
• Vaccination records reviewed (if current, risk is minimal)
• At the end of 14 days: if no symptoms, the dog is released

Cost: Quarantine at a facility is $15–$30/day. Home quarantine is free if allowed.

During quarantine, your dog cannot:

• Leave the home/facility (except for veterinary care)
• Interact with other animals
• Interact with the public

If your dog is current on rabies vaccination, home quarantine is usually allowed. If not vaccinated, expect facility quarantine and vaccination order.

The Dangerous Dog Assessment

After the bite report, Ontario municipalities conduct a "dangerous dog" assessment. The severity depends on:

1. Injury extent (skin broken? Severe laceration? Hospitalization needed?)
2. Bite circumstances (unprovoked? Provoked? Defending territory? Protecting a resource?)
3. Dog history (first bite? Prior incidents? Pattern?)
4. Victim status (child? Adult? Elderly? Veterinary professional?)

Possible Outcomes

Low-risk assessment (minor bite, provoked or accidental):

• No restrictions
• Owner education recommendation
• Possible $100–$500 fine
• No dangerous dog designation

Medium-risk assessment (moderate bite, unclear context):

• Dog declared "restricted" or "potentially dangerous"
• Mandatory training (often 8–12 weeks)
• Mandatory muzzle in public
• Liability insurance required ($300,000–$500,000 minimum)
• Annual registration fees ($100–$300)
• Annual veterinary certification of training/behavior

High-risk assessment (severe bite, unprovoked, pattern of incidents):

• Dog declared "dangerous"
• Possible seizure and euthanasia (in severe cases)
• Owner banned from owning dogs
• Criminal charges possible (negligence, failure to control animal)

The assessment is not arbitrary. The municipality has guidance (often based on provincial frameworks or local bylaws).

What You Should (And Should Not) Do Behaviorally

Immediately After a Bite Incident:

Do:

• Secure your dog away from the victim and other people
• Assess your dog's state (stressed? Calm? Fearful? Aggressive?)
• Get medical care for the victim
• Gather witness information
• Document the sequence of events while fresh

Do NOT:

• Yell at, hit, or punish your dog (the dog is already stressed; punishment adds fear and can increase future aggression)
• Assume the dog is "broken" and needs euthanasia
• Spread the incident on social media (creates a paper trail of admissions)
• Delete photos, videos, or documentation
• Discuss the incident with the victim's insurance company without your own lawyer present

In the Following Days:

Get a behavioral evaluation from a qualified trainer or veterinary behaviorist. NOT for the sake of appearances, but because:

• You need to understand what happened (Was this a one-off incident? Or a pattern?)
• You need to know if your dog is actually dangerous or if the circumstances were unusual
• You need a professional assessment for the municipality's investigation

This evaluation will cost $200–$500. It is worth it.

Long-term (After Quarantine/Assessment):

If your dog is declared "restricted" or "dangerous," your options depend on severity:

For low-to-medium risk dogs:

1. Obedience/behavior training: 8–12 weeks, often mandatory
2. Muzzle training: Teach your dog to accept and wear a muzzle calmly in public
3. Restricted environment: Keep the dog home except for supervised walks, veterinary visits, and training
4. Liability insurance: Non-negotiable; mandatory for many municipalities
5. Behavior monitoring: Annual re-evaluation, sometimes annual vet certification

For high-risk dogs: If your dog is declared "dangerous" and faces possible seizure, consult a lawyer immediately. Options may include:

• Appeal the assessment
• Behavioral rehabilitation (if the municipality allows it)
• Relocation out of province (if applicable)
• In severe cases, euthanasia (discussed with veterinarian and municipality)

The Ontario Legal Framework

Relevant laws:

• Dog Owners Liability Act (DOLA): Establishes strict liability for dog bite injuries (owners are liable regardless of negligence)
• Health Protection and Promotion Act (HPPA): Covers rabies exposure and quarantine
• Provincial legislation (O. Reg 349/20): Defines dangerous dog criteria
• Municipal bylaws: Toronto has its own Responsible Pet Ownership Bylaw; Markham, Mississauga, and others have variants

What DOLA means: If your dog bites someone, you are liable for injuries even if you did not know the dog was aggressive. Negligence is irrelevant. Liability is automatic.

Damages recovered in Ontario bite cases:

• Medical costs (often $500–$5,000)
• Pain and suffering (if significant injury, $5,000–$50,000+)
• Lost wages (if victim was disabled by injury)
• Psychological counseling (if victim suffered trauma)

Total awards can reach $100,000 for severe bites. Insurance is critical.

The Practical Cost

A dog bite in Ontario costs:

• Medical bills: $500–$10,000 (victim's care)
• Insurance deductible: $500–$1,000
• Quarantine (if facility): $150–$420 (10–14 days)
• Behavioral evaluation: $200–$500
• Legal consultation: $500–$2,000
• Behavioral training (if mandated): $1,500–$5,000
• Liability insurance (annual): $300–$600/year
• Muzzle training: $300–$800
• Municipal fines: $100–$500

Total first-year cost: $4,000–$20,000 depending on severity.

This does not include legal defense if the victim sues, which is common.

Prevention: The Real Strategy

Do not let your dog get to the point of biting. If your dog is showing:

• Escalating reactivity on leash
• Guarding behavior (food, toys, spaces)
• Fear-based snapping
• Previous air-snaps or minor bites

...book an evaluation NOW. Behavior rehabilitation is far cheaper and less disruptive than dealing with a full bite incident.

The Dogfather aggression program is designed exactly for this — catching the problem before a bite happens.

Next Steps After a Bite

1. Legal: Consult a lawyer (many offer free initial consultation)
2. Behavioral: Get professional evaluation from a trainer/behaviorist
3. Medical: Ensure victim receives care; maintain documentation
4. Municipal: Complete quarantine and assessment process
5. Insurance: Report immediately; follow insurer's guidance
6. Training: Commit to behavioral modification if the dog qualifies

Bottom Line

A dog bite in Ontario has legal, financial, and behavioral consequences. Do not hide it. Do not minimize it. Act immediately and transparently.

Your dog is not destined to be euthanized. But the dog does need professional behavioral help, and you need to understand what happened.

If you have a dog that shows any signs of aggression or reactivity, prevent a bite before it happens.

Book an Aggression Evaluation → $50 (credited toward program)

Call (647) 551-2633. We handle reactive and aggressive dogs across the GTA. Prevention is cheaper than legal defense.