African Hunting Dogs:  The world’s most successful hunters, with a 50-70% success rate in hunts.

Oldest Dog Breed:  The Saluki, dating back to 329 BC in Ancient Egypt, with possible origins as far back as 7,000 BC 

Three Eyelids:  Dogs have a third eyelid, known as the nictitating membrane, which protects and lubricates their eyes. 

Shar-Pei and Chow Chow:  These breeds have unique black tongues. 

Greyhound Speed:  Greyhounds can maintain a speed of 35 mph for up to seven miles, making them faster than cheetahs over long distances 

Cheetah vs. Greyhound:  In a long-distance race, a Greyhound would outrun a Cheetah. 

Dogs’ Incredible Smell:  A dog’s sense of smell is up to 100,000 times more acute than a human's. 

Dogs Dream Too:  Dogs have similar sleep patterns to humans and experience dreams during the REM stag