How to Greet an Unfamiliar Dog: Ask, Wait and Respect Space

By Dr Duncan Houston

A dog you do not know may look inviting, but their owner may be managing something you cannot see. The dog may also want to investigate you without wanting to be touched.

A good greeting leaves room for both answers: the owner's permission and the dog's willingness. If either is missing, a polite greeting from a distance is enough.

Quick Answer

Ask the owner before approaching or touching an unfamiliar dog, then let the dog choose whether to come closer. Stay calm, avoid looming or reaching toward the face, and keep any permitted contact brief. If the dog turns away, becomes tense or tries to leave, stop rather than trying to win them over.

First decide whether a greeting is appropriate

Do not interrupt a dog who is sleeping, eating or caring for puppies. Do not reach through a fence, into a car or into a confined resting area to pet an unfamiliar dog. The AVMA specifically advises respecting these situations.

Leave working assistance dogs to their handler unless the handler explicitly invites interaction. Likewise, a dog wearing walking equipment is not automatically available for a greeting simply because they are in a public place.

If no responsible owner or handler is present, do not treat the encounter as an invitation to touch. Keep space and seek appropriate local help if the dog appears lost, rather than cornering or grabbing them.

Ask before moving into the dog's space

“May I say hello?” is useful only if you wait for the answer. Ask from a distance where the owner can comfortably decline without already having to pull the dog away.

Accept “no” without asking the person to justify it. Do not respond that dogs always like you, that you have treats or that the dog looks friendly. Those comments create pressure without making the encounter safer.

If the owner agrees, ask what their dog prefers. Some may be happy with a brief stroke; others may be learning to remain beside their person while strangers pass.

Let the dog investigate without reaching for the face

Remain relaxed and allow the dog to approach. Do not bend over them, stare into their eyes or extend a hand toward their nose as a compulsory introduction. A dog can investigate while your hands remain comfortably near your own body.

A sniff is information gathering. It does not automatically mean that the next step should be a pat on the head, a hug or a face close to the dog's muzzle.

Stay upright or in a comfortable position that allows you to move away normally. There is no need to kneel with your face at the level of an unfamiliar dog's mouth.

If contact is welcome, keep it simple

Follow the owner's guidance. A brief, gentle stroke on an accessible chest or shoulder may be appropriate for a dog who is actively seeking contact. Avoid reaching over the head, grabbing the collar or enclosing the dog in your arms.

Pause and remove your hand. If the dog moves away, the interaction is finished. If they remain comfortable and seek more contact, you can decide with the owner whether to continue briefly.

Do not feed an unfamiliar dog without permission. Food can complicate the situation, and the owner may have dietary or training reasons to decline it.

Read the whole dog and the changing situation

A wagging tail does not guarantee that touching is welcome. Size, breed and appearance do not reliably tell you whether a dog will bite. Look at what the dog is doing and listen to the person managing them.

• Possible interest: the dog approaches willingly with a loose posture and can leave. Still keep contact optional.
• Pause and give space: the dog turns away, retreats, becomes still or stiff, or no longer seeks the interaction.
• End the greeting: the dog growls, shows teeth, snaps or lunges. Do not continue reaching or try to correct the dog.

Raised hair, tail movement or a single facial expression should not be treated as a complete diagnosis of the dog's feelings. You do not need certainty about the emotion before choosing to stop.

Children need an adult-led plan

Teach children to ask the owner and to accept that the answer may be no. An adult should stay actively involved; a child should not be responsible for detecting every subtle sign of discomfort.

Keep faces away from the dog's face and avoid hugs, squealing, chasing or grabbing. If the child is too excited to follow those limits, skip the greeting. Watching from a comfortable distance is a valid alternative.

The rule applies to familiar-looking dogs too. A dog of the same breed as a family pet is still an individual you do not know.

If an unfamiliar dog approaches you unexpectedly

The AVMA advises remaining calm and still when a dog approaches to sniff, rather than running or shouting. Avoid staring into the dog's eyes. Give the dog room to move away, and ask the owner to call them back when possible.

If you feel threatened, focus on ending the encounter calmly rather than offering your hand or trying to pet the dog. This is not the moment to test a training technique or prove that you are comfortable around dogs.

Common greeting mistakes

• Asking while already touching: permission needs to come first.
• Putting a hand under the dog's nose: allow investigation without reaching toward the face.
• Hugging or leaning in for a photo: do not turn a brief greeting into restraint.
• Following a dog who walks away: let leaving end the interaction.
• Assuming the owner is overreacting: respect their request for space.

Frequently Asked Questions

Should I offer my hand for a dog to sniff?

You do not need to put a hand toward their face. Ask the owner first and let the dog investigate at their own pace while you remain calm.

Is a wagging tail permission to pet?

No. Consider the whole interaction, the owner's guidance and whether the dog is choosing contact.

What if the owner says yes but the dog backs away?

Do not proceed. The owner's permission does not remove the dog's need for space.

Can I greet a dog through a fence?

Do not reach through or over a fence to pet an unfamiliar dog. Keep distance and speak to the owner from outside the dog's space.

The best greeting may be no contact

Ask, wait and keep the interaction easy to leave. Respecting a dog who prefers space is a successful encounter, even when you never touch them.

Sources

• AVMA: preventing dog bites and greeting unfamiliar dogs
• AVMA dog-bite prevention brochure

ASK A VET™ encourages considerate interactions that give dogs and people the space they need.