Did you know that dogs have been domesticated by humans for over 15,000 years?
Dogs have an extraordinary sense of smell, with some breeds capable of detecting scents even in parts per trillion.
The Basenji dog breed is known as the "barkless dog" because it doesn't bark
Dogs dream just like humans, and you can see their legs twitch and hear them bark or whimper while they're in deep sleep.
The world's smallest dog breed is the Chihuahua, weighing as little as 2 pounds (0.9 kilograms).
A dog's sense of hearing is four times more acute than that of a human.
A dog's sense of smell can detect certain diseases, like cancer, in humans.
A dog's whiskers are highly sensitive and help them navigate in the dark.
Greyhounds are one of the fastest dog breeds, capable of running up to 45 miles per hour (72 kilometers per hour).
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