1- Dogs and humans have the same type of slow wave sleep (SWS) and rapid eye movement (REM) and during this REM stage dogs can dream. The twitching and paw movements that occur during their sleep are signs that your pet is dreaming
2- Dogs’ eyes contain a special membrane, called the tapetum lucidum, which allows them to see in the dark.
3- Unlike, us, humans who sweat everywhere, dogs only sweat through the pads of their feet.
4- An adult dog has 42 teeth.
5- When a puppy is born, he is blind, deaf, and toothless.
6- All dogs, regardless of breed, are direct descendants of wolves and technically of the same species.
7- A dog’s whiskers which is found on the muzzle, above the eyes and below the jaws are technically known as vibrissae. They are touch-sensitive hairs than actually sense minute changes in airflow.
8- A one year-old pup is as physically mature as a 15-year-old human.