The fastest breed, the Greyhound, can run up to 44 miles per hour.
Male dogs have a bone in their penis.
Dogs with a flesh colored nose is said to have a "Dudley Nose."
The Alaskan Malamute can withstand temperatures as low as 70 degrees below zero.
Dogs can count up to five and can perform simple mathematical calculations.
The Beagle came into prominence in the 1300s and 1400s during the days of King Henry VII of England. Elizabeth I was fond of Pocket Beagles, which were only 9" high.
A German Shepherd guide dog led her blind companion the entire 2,100 mile Appalachian Trail.
U.S. Customs dogs "Rocky" and "Barco" were so good at patrolling the border that Mexican drug lords put a $300,000 bounty on their heads.
There are almost 5 million dog bites per year; children are the main victims. Dog bites cause losses of over $1 billion a year.
Hollywood’s first and arguably best canine superstar was Rin Tin Tin, a five-day-old German Shepherd found wounded in battle in WWI France and adopted by an American soldier, Lee Duncan. He would sign his own contracts with his paw print.
The best dog to reportedly attract a date is the Golden Retriever. The worst is the Pit Bull.