How much do you know? Check out what is true and what is false below (click the question mark to find out!) as Mr Dorsey, the best teacher in this universe, challenges you - what do you know?

There are more than 200 million dogs and cats in America
The worlds largest dog weighed in at 350 pounds
7/10 British dogs get Christmas gifts from their owners
American's spend 5.4 billion dollars a year on their pets
Dalmatians are actually born completely black
Cat's not dogs are the most common pet in America
Larger dogs generally live longer than smaller dogs
Female Saint Bernards always give birth to four puppies
A Greyhound can reach up to 70kph
Greyhounds have better eyesight than any other breed of dog