How fast, strong and sharp-nosed is a dog?
The domestic dog (Canis lupus familiaris) is the same species whether it sleeps on a sofa or scavenges a market street, and its body still carries the speed, jaw power and scenting ability of a hunting carnivore. Here are the numbers that people search for most, each checked against an authoritative source. For the full profile, see our dog species guide.
How fast can a dog run?
The sighthound built for speed, the racing-type dog, can reach roughly 72 km/h (about 45 mph) over a short sprint, which makes it the fastest of all dog breeds. It is a sprinter, not a marathoner: that top speed is held for only a few hundred metres before the dog tires. A typical pet or free-roaming dog cruises far slower, but most healthy adults can still outrun a person comfortably over a short dash.
How strong is a dog's bite?
Bite force is measured with a pressure sensor placed between the teeth and recorded in pounds per square inch (PSI). An average dog bites at around 235 PSI, already stronger than the roughly 160 PSI of a human jaw, and the most powerfully built breeds test far higher. Bite strength tracks mostly with body size and skull shape rather than temperament, which is why a large dog applies more force than a small one regardless of mood.
How good is a dog's sense of smell?
This is where the dog truly outclasses us. A dog's nose carries on the order of 200 to 300 million scent receptors, against roughly 5 to 6 million in a human nose, and the brain region devoted to smell is proportionally far larger. Estimates of overall sensitivity range from about 10,000 to 100,000 times keener than a person's, depending on breed. A bony shelf inside the nose traps odour molecules so scent accumulates with each sniff, and a separate organ in the roof of the mouth detects chemical signals we cannot perceive at all.
How long does a dog live?
A well-cared-for owned dog usually lives about 10 to 13 years. Free-roaming street dogs, the same subspecies living rough, often survive only around three to four years on average because of road traffic, disease and poor nutrition. That gap between a sheltered life and a street life is exactly where humane care makes the biggest difference.
WARN's partner veterinary teams treat, vaccinate and neuter free-roaming dogs so more of them live longer, healthier lives. If that work matters to you, a quiet way to help is our donation page.
Read the full dog wildlife guide for biology, lifespan and welfare context — or support WARN to help fund the partner teams caring for free-roaming dogs.
Read the full Dog wildlife guide for the facts, IUCN status and conservation context — or donate to WARN to help fund the local partners protecting this species.