10 fun facts about dogs

How many of these fun facts about dogs did you already know?

1: A dog's nose print is unique, which makes it the equivalent to a human fingerprint.

2: A dog has 300 million receptors in their nose, versus only 5 million for a human nose.

3: The smallest ever dog was a 3.8 inches Chihuahua that only weighed one pound.

4: If you yawn, it can be contagious and make your dog yawn too!

5: Dogs curl up when they sleep to protect their organs, this comes from the times when they were in the wild amongst predators. 

6: Around 1 million dogs in the U.S. are the primary beneficiary in their owner's will.

7: 3 dogs survived the sinking of the Titanic in 1912, all from First Class cabins.

8: All puppies are born deaf.

9:  When you pet a dog, both your and their blood pressure goes down. 

10: Dogs have 18 muscles responsible for their ear movement, helping them change the direction of their ears to hear sounds, as well as communicate through body language.