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.