Dogs follow a specific sequence when greeting each other, starting with sniffing. By adhering to this proper greeting protocol, they can become friends without fighting or stress.

| Item | Desirable Situation | Dangerous Situation |
|---|---|---|
| Approach speed | Slowly, drawing an arc | Going straight/charging head-on |
| Leash state | Loose U-shape | Pulled taut |
| Tail | Mid-height, soft wag | Raised high, wagging stiffly |
| Body posture | Standing sideways to explore | Climbing on top of or draping over the other's shoulders |
| Time | Separating naturally after 3-5 seconds | Staring continuously for over 10 seconds |
3-second rule: greet each other for 3 seconds → separate and check the reaction → re-contact if okay

When to Avoid Greetings
If you notice any of the following signs, stop greeting the dog immediately and give it space. Forcing interaction can lead to aggressive behavior or bites. - Growling, baring teeth, raised hackles - Tail tucked under the body and crouching posture (indicating extreme fear) - Frequent lip licking or repeated yawning (stress signals) - One dog consistently trying to avoid interaction while the other pursues - Confined spaces with no escape route, such as narrow hallways or elevators

Consider Breed and Individual Characteristics
Even within the same breed, individual dogs can vary greatly in temperament and physical condition. Brachycephalic breeds with short muzzles, such as French Bulldogs and Pugs, may pant easily when excited, so keep an eye on them to prevent overexertion. Senior dogs with poor vision or puppies with hearing impairments can be especially startled by someone approaching from behind. Encounters between large dogs that haven’t received basic training, or between intact males, can also heighten tension. Above all, behavioral differences within the same breed can be significant, and how a dog was raised and handled during puppyhood profoundly shapes its temperament. Always remember that saying “my dog is naturally gentle” reflects hope rather than a reliable prediction.

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.
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[1] Horwitz D, Mills D. BSAVA Manual of Canine and Feline Behavioural Medicine, 2nd ed. BSAVA, 2009.
[2] Overall KL. Manual of Clinical Behavioral Medicine for Dogs and Cats. Elsevier, 2013.
[3] Little S. The Dog Care Handbook: Things I Wish My Vet Had Told Me. 5M Publishing, 2024.
[4] Shepherd K. Introduction to Animal Behavior and Veterinary Behavioral Medicine, Ch.11.