Can You Get Rabies From a Dog Scratch? What CDC Guidance Says

The Short Answer

Dog scratches by themselves almost never transmit rabies. The rabies virus is carried in saliva and nerve tissue, not in skin or claws. A clean nail scrape — even one that breaks skin — does not deliver virus into the wound.

The exception is when a dog's claws are freshly contaminated with saliva, typically because the dog has been licking its paws. If a rabid dog with saliva-coated claws then scratches and breaks skin, the wound can be inoculated with the virus. This is a much narrower scenario than a bite, but it is biologically possible.

For practical purposes: a scratch from a healthy, vaccinated household dog with no behavioural concerns is not a rabies issue. A scratch from a stray, sick, or behaviourally abnormal dog that breaks skin warrants medical evaluation.

Why Scratches Are Lower-Risk Than Bites

Rabies transmission requires the virus to be deposited from saliva into a wound where it can reach nerves. Bites and scratches differ on every aspect of this chain:

• Saliva delivery. Bites deliver fresh saliva directly into the wound. Scratches deliver saliva only if claws happened to be freshly contaminated.
• Wound depth. Bites are deep punctures that reach muscle and connective tissue where the virus can effectively infect nerves. Scratches are superficial abrasions or cuts that may not reach deeper tissue.
• Viral load. Bite wounds receive a much larger inoculum than scratch wounds.
• Risk classification. CDC classifies any saliva contact with broken skin as a potential exposure, but bites carry meaningfully higher risk than scratches in nearly every published surveillance dataset.

When Does a Dog Scratch Need Medical Evaluation?

Essentially No Rabies Risk

• Healthy, currently vaccinated household dog with no recent wildlife contact.
• A familiar dog behaving normally before and after the scratch.
• Scratches that did not break skin.
• Dog that was clearly play-scratching with no aggression.

For these scenarios, wound cleaning and a tetanus check are the only practical concerns. No rabies treatment is recommended.

Warrants Medical Evaluation

• Scratch from a stray, feral, or unknown dog that broke skin.
• Scratch from a dog with recent wildlife exposure — particularly a dog that fought with a raccoon, skunk, fox, coyote, or bat.
• Scratch from a dog showing any behavioural or neurological signs — unprovoked aggression, drooling, paralysis, sudden personality change. See how to know if a dog has rabies.
• Scratch from an unvaccinated or overdue dog, even if it appears healthy.
• Any scratch where you cannot identify the dog or assess its vaccination status.
• Scratches received during a dog attack (alongside bites — the bite is the dominant exposure but the scratches are evaluated together).

What to Do After a Dog Scratch

1. Wash thoroughly with soap and running water for at least 15 minutes. This is the single most effective first step regardless of which concern is foremost.
2. Apply antiseptic such as povidone-iodine.
3. Identify the dog and its vaccination status if possible. A current rabies certificate makes the situation simple.
4. Check your tetanus booster history. Any wound that breaks skin warrants a tetanus update if your last shot was 5+ years ago.
5. Watch for signs of bacterial infection over the next 1-3 days: redness, swelling, warmth, pus, fever, red streaking from the wound.
6. For scratches from stray, unknown, or behaviourally abnormal dogs: seek medical evaluation. Do not self-assess rabies risk in these cases.

For broader bite first-aid steps, see what to do after a bite.

Scratch From a Vaccinated Household Dog

This is the most common and most reassuring scenario. A healthy, currently vaccinated household dog cannot transmit rabies through a scratch under normal circumstances. The dog itself is not infectious — without rabies, there is no saliva for the claws to be contaminated with.

For these cases, focus on:

• Wound cleaning to prevent bacterial infection.
• Watching for signs of infection over the next few days.
• Tetanus update if booster history is more than 5-10 years old.

Scratch From a Stray or Unknown Dog

This is where the calculation changes. Stray dogs are:

• Generally unvaccinated.
• More likely to have wildlife contact, including with rabid animals.
• Often impossible to track for the 10-day observation that would resolve uncertainty.

A scratch that breaks skin from an unknown dog should be evaluated by your local public health department or a clinician — find a rabies-capable clinic near you, and see typical rabies shot costs if treatment is recommended. The risk is not as high as from a bite, but it is high enough that self-assessment is the wrong call. For bite-specific guidance, see stray dog bite: rabies risk and what to do.

Wound Infection Is the More Common Risk

Even when rabies is not the concern, dog scratches deserve respect. The actual risks, in order of likelihood:

• Bacterial wound infection — dog claws and mouths carry various bacteria including Pasteurella multocida, Staphylococcus, and Streptococcus species.
• Tetanus — standard wound risk applicable to any skin-breaking injury.
• Capnocytophaga — rare but can cause severe illness in immunocompromised people, particularly those without a spleen.

Deep scratches or scratches on the hand or face are at higher risk for bacterial infection and may benefit from prophylactic antibiotics — talk to your clinician.

If Both Bites and Scratches Happened

In an actual dog attack, victims often receive both bites and scratches. In that scenario:

• The bite is the dominant rabies concern — it is deeper, larger inoculum, direct saliva delivery.
• The scratches are evaluated as part of the same exposure event.
• Standard PEP applies regardless of which wound is more obvious.

Do not try to assess one wound type as separate from the other. The exposure is the entire event. See do you need a rabies vaccine after a dog bite for the broader decision framework.

Bottom Line

Most dog scratches do not require rabies treatment. The few that do are scratches from stray, sick, or behaviourally abnormal dogs — particularly those with recent wildlife contact or that cannot be identified. For everything else, the practical risks from a dog scratch are bacterial infection and tetanus, both of which are managed with wound care and a tetanus booster check.

If you are uncertain, use the SafeRabies risk assessment tool for a guided check or contact your local public health department.

Sources

This article reflects current rabies guidance from:

• CDC — About Rabies
• WHO — Rabies fact sheet

Part of our animal rabies guide: see the full overview of which animals carry rabies — including which are high-risk and which almost never spread it.