A dog can locate the source of a sound in 1/600 of a second and can hear sounds four times farther away than a human can.
There are an estimated 400 million dogs in the world.
Dogs nose prints are as unique as human fingerprints and can be used to identify them.
Petting dogs is proven to lower blood pressure of dog owners.
One female dog and her female children could produce 4372 puppies is seven years.
Dogs can smell about 1000 times better than humans. While humans have 5 million smell-detecting cells, dogs have more than 220 million. The part of the brain that interprets smell is also four times larger in dogs than in humans.
Dogs can detect lung cancer by sniffing a person’s breath.
The Beagle and Collie are the noisiest dog breeds, while the Akbash Dog and the Basenji are quietest.
The most intelligent dogs are reportedly the Border Collie and the Poodle, while the least intelligent dogs are the Afghan Hound and the Basenji.
Dogs have a wet nose to collect more of the tiny droplets of smelling chemicals in the air.
The oldest dog on record was an Australian cattle dog named Bluey who lived 29 years and 5 months. In human years, that is more than 160 years old.
The average dog can run at a speed of about 30 km/h (19 mph). Greyhounds are the fastest dogs on Earth and can run at speeds of 72 km/h (45 mph).